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<!-- DFIN ActiveDisclosure(SM) XBRL Linkbase Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2020-08-03T16:19:54.9470287+00:00 -->
<!-- Version            : 5.0.1.476 -->
<!-- Package ID         : 192f64ebb93d43acab98c62b3daad882 -->
<!-- Copyright (c) 2020 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
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    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Period Focus</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Fiscal Year End Date</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, State or Province</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address State Or Province</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address Postal Zip Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
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    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
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    <link:loc xlink:href="sgu-20200630.xsd#sgu_CustomerCreditBalances" xlink:type="locator" xlink:label="sgu_CustomerCreditBalances" />
    <link:label xml:lang="en-US" xlink:label="sgu_CustomerCreditBalances_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Customer credit balances.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfFinancialPositionAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Of Financial Position [Abstract]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsAbstract" xlink:type="locator" xlink:label="us-gaap_AssetsAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASSETS</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Assets [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:type="locator" xlink:label="us-gaap_AssetsCurrentAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrentAbstract" xlink:to="us-gaap_AssetsCurrentAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Assets Current [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and cash equivalents</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash And Cash Equivalents At Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:type="locator" xlink:label="us-gaap_AccountsReceivableNetCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Receivables, net of allowance of $8,757 and $8,378, respectively</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsReceivableNetCurrent" xlink:to="us-gaap_AccountsReceivableNetCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsReceivableNetCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable Net Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InventoryNet" xlink:type="locator" xlink:label="us-gaap_InventoryNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Inventories</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryNet" xlink:to="us-gaap_InventoryNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InventoryNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Inventory Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:type="locator" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepaid expenses and other current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:to="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Prepaid Expense And Other Assets Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsCurrent" xlink:type="locator" xlink:label="us-gaap_AssetsCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Assets Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property and equipment, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Property Plant And Equipment Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Operating lease right-of-use assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseRightOfUseAsset" xlink:to="us-gaap_OperatingLeaseRightOfUseAsset_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Right Of Use Asset</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Goodwill" xlink:type="locator" xlink:label="us-gaap_Goodwill" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Goodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Goodwill" xlink:to="us-gaap_Goodwill_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_Goodwill_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangibles, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsNet" xlink:to="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:type="locator" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted cash</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash And Cash Equivalents Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:type="locator" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Captive insurance collateral</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:to="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Available For Sale Securities Debt Securities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherAssetsNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred charges and other assets, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets Noncurrent</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_Assets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total assets</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities And Stockholders Equity [Abstract]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current liabilities</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Current [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:type="locator" xlink:label="us-gaap_AccountsPayableCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair liability value of derivative instruments</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liabilities Current</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtCurrent" xlink:to="us-gaap_LongTermDebtCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current portion of operating lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityCurrent" xlink:to="us-gaap_OperatingLeaseLiabilityCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Liability Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_AccruedLiabilitiesCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued expenses and other current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedLiabilitiesCurrent" xlink:to="us-gaap_AccruedLiabilitiesCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Liabilities Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredRevenueCurrent" xlink:type="locator" xlink:label="us-gaap_DeferredRevenueCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredRevenueCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unearned service contract revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRevenueCurrent" xlink:to="us-gaap_DeferredRevenueCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredRevenueCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Revenue Current</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CustomerCreditBalances_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer credit balances</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CustomerCreditBalances_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Customer Credit Balances</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_LiabilitiesCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:type="locator" xlink:label="us-gaap_LongTermDebtNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtNoncurrent" xlink:to="us-gaap_LongTermDebtNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term operating lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:to="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Liability Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:type="locator" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax liabilities, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:to="us-gaap_DeferredIncomeTaxLiabilitiesNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Income Tax Liabilities Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherLiabilitiesNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other long-term liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="us-gaap_OtherLiabilitiesNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Liabilities Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PartnersCapitalAbstract" xlink:type="locator" xlink:label="us-gaap_PartnersCapitalAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PartnersCapitalAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partners&#8217; capital</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalAbstract" xlink:to="us-gaap_PartnersCapitalAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PartnersCapitalAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Partners Capital [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LimitedPartnersCapitalAccount" xlink:type="locator" xlink:label="us-gaap_LimitedPartnersCapitalAccount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedPartnersCapitalAccount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common unitholders</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedPartnersCapitalAccount" xlink:to="us-gaap_LimitedPartnersCapitalAccount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedPartnersCapitalAccount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Limited Partners Capital Account</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralPartnersCapitalAccount" xlink:type="locator" xlink:label="us-gaap_GeneralPartnersCapitalAccount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GeneralPartnersCapitalAccount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General partner</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralPartnersCapitalAccount" xlink:to="us-gaap_GeneralPartnersCapitalAccount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GeneralPartnersCapitalAccount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">General Partners Capital Account</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated other comprehensive loss, net of taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income Loss Net Of Tax</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PartnersCapital" xlink:type="locator" xlink:label="us-gaap_PartnersCapital" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PartnersCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total partners&#8217; capital</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapital" xlink:to="us-gaap_PartnersCapital_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PartnersCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Partners Capital</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:type="locator" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities and partners&#8217; capital</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities And Stockholders Equity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:type="locator" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Receivables, allowance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Allowance For Doubtful Accounts Receivable Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeStatementAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable" xlink:type="locator" xlink:label="us-gaap_StatementTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductOrServiceAxis" xlink:type="locator" xlink:label="srt_ProductOrServiceAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product and Service</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ProductOrServiceAxis" xlink:to="srt_ProductOrServiceAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Product Or Service [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ProductsAndServicesDomain" xlink:type="locator" xlink:label="srt_ProductsAndServicesDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_ProductsAndServicesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product and Service</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ProductsAndServicesDomain" xlink:to="srt_ProductsAndServicesDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ProductsAndServicesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Products And Services [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProductMember" xlink:type="locator" xlink:label="us-gaap_ProductMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProductMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProductMember" xlink:to="us-gaap_ProductMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProductMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Product [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_InstallationAndServicesMember" xlink:type="locator" xlink:label="sgu_InstallationAndServicesMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_InstallationAndServicesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Installation and services.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_InstallationAndServicesMember" xlink:to="sgu_InstallationAndServicesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_InstallationAndServicesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Installations and services</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_InstallationAndServicesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Installation And Services [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CostOfProductMember" xlink:type="locator" xlink:label="sgu_CostOfProductMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_CostOfProductMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cost of product.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CostOfProductMember" xlink:to="sgu_CostOfProductMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_CostOfProductMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cost of product</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CostOfProductMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cost Of Product [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CostOfInstallationsAndServicesMember" xlink:type="locator" xlink:label="sgu_CostOfInstallationsAndServicesMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_CostOfInstallationsAndServicesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cost of installations and services.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CostOfInstallationsAndServicesMember" xlink:to="sgu_CostOfInstallationsAndServicesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_CostOfInstallationsAndServicesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cost of installations and services</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CostOfInstallationsAndServicesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cost Of Installations And Services [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems" xlink:type="locator" xlink:label="us-gaap_StatementLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenuesAbstract" xlink:type="locator" xlink:label="us-gaap_RevenuesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevenuesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sales:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenuesAbstract" xlink:to="us-gaap_RevenuesAbstract_lbl" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchased And Retired During Period Shares</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_PartnersCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending Balance</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_PartnersCapitalAccountUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending Balance, Unit</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_PaymentsOfCustomerRetainage" xlink:type="locator" xlink:label="sgu_PaymentsOfCustomerRetainage" />
    <link:label xml:lang="en-US" xlink:label="sgu_PaymentsOfCustomerRetainage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Payments of Customer Retainage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_PaymentsOfCustomerRetainage" xlink:to="sgu_PaymentsOfCustomerRetainage_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfCashFlowsAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Of Cash Flows [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows provided by (used in) operating activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Operating Activities [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustment to reconcile net income to net cash provided by (used in) operating activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:type="locator" xlink:label="us-gaap_DepreciationDepletionAndAmortization" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation and amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationDepletionAndAmortization" xlink:to="us-gaap_DepreciationDepletionAndAmortization_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation Depletion And Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:type="locator" xlink:label="us-gaap_ProvisionForDoubtfulAccounts" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProvisionForDoubtfulAccounts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for losses on accounts receivable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProvisionForDoubtfulAccounts" xlink:to="us-gaap_ProvisionForDoubtfulAccounts_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProvisionForDoubtfulAccounts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Provision For Doubtful Accounts</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredIncomeTaxes" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Change in deferred taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes" xlink:to="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Deferred Income Taxes</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in operating assets and liabilities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Operating Capital [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInReceivables" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Decrease (increase) in receivables</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInReceivables" xlink:to="us-gaap_IncreaseDecreaseInReceivables_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Receivables</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInInventories" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Decrease in inventories</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInInventories" xlink:to="us-gaap_IncreaseDecreaseInInventories_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Inventories</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Decrease in other assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Other Operating Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Decrease in accounts payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayable" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Accounts Payable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInContractWithCustomerLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInContractWithCustomerLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Decrease in customer credit balances</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInContractWithCustomerLiability" xlink:to="us-gaap_IncreaseDecreaseInContractWithCustomerLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInContractWithCustomerLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Contract With Customer Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase in other current and long-term liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease In Other Operating Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by operating activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Operating Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows provided by (used in) investing activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Investing Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Capital expenditures</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Payments To Acquire Property Plant And Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sales of fixed assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:to="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Sale Of Property Plant And Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireInvestments" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquireInvestments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquireInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchase of investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireInvestments" xlink:to="us-gaap_PaymentsToAcquireInvestments_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquireInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Payments To Acquire Investments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Acquisitions</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:to="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Payments To Acquire Businesses Net Of Cash Acquired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash used in investing activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows provided by (used in) financing activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided By Used In Financing Activities [Abstract]</link:label>
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    <link:label xml:lang="en-US" xlink:label="srt_OwnershipDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ownership</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_OwnershipDomain" xlink:to="srt_OwnershipDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_OwnershipDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Ownership [Domain]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_StarGroupLPMember" xlink:type="locator" xlink:label="sgu_StarGroupLPMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_StarGroupLPMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Star Group L.P.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_StarGroupLPMember" xlink:to="sgu_StarGroupLPMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_StarGroupLPMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Star Group L.P.</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_StarGroupLPMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Star Group L P [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:type="locator" xlink:label="srt_ConsolidatedEntitiesAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_ConsolidatedEntitiesAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidated Entities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ConsolidatedEntitiesAxis" xlink:to="srt_ConsolidatedEntitiesAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ConsolidatedEntitiesAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Entities [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:type="locator" xlink:label="srt_ConsolidatedEntitiesDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_ConsolidatedEntitiesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidated Entities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ConsolidatedEntitiesDomain" xlink:to="srt_ConsolidatedEntitiesDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ConsolidatedEntitiesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Entities [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SubsidiariesMember" xlink:type="locator" xlink:label="srt_SubsidiariesMember" />
    <link:label xml:lang="en-US" xlink:label="srt_SubsidiariesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Petro Holdings, Inc</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_SubsidiariesMember" xlink:to="srt_SubsidiariesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_SubsidiariesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsidiaries [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_SubsidiariesTwoMember" xlink:type="locator" xlink:label="sgu_SubsidiariesTwoMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_SubsidiariesTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Subsidiaries Two</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_SubsidiariesTwoMember" xlink:to="sgu_SubsidiariesTwoMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_SubsidiariesTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Star Acquisitions, Inc</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_SubsidiariesTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsidiaries Two [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_SubsidiariesFourMember" xlink:type="locator" xlink:label="sgu_SubsidiariesFourMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_SubsidiariesFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Subsidiaries Four</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_SubsidiariesFourMember" xlink:to="sgu_SubsidiariesFourMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_SubsidiariesFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Petroleum Heat and Power Co., Inc.</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_SubsidiariesFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsidiaries Four [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityAxis" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lender Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityAxis" xlink:to="us-gaap_LineOfCreditFacilityAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Facility, Lender</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityLenderDomain" xlink:to="us-gaap_LineOfCreditFacilityLenderDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Lender [Domain]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_FifthAmendmentMember" xlink:type="locator" xlink:label="sgu_FifthAmendmentMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_FifthAmendmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Fifth amendment.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_FifthAmendmentMember" xlink:to="sgu_FifthAmendmentMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_FifthAmendmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fifth Amendment</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_FifthAmendmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fifth Amendment [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:type="locator" xlink:label="us-gaap_CreditFacilityAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:type="locator" xlink:label="us-gaap_CreditFacilityDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_CreditFacilityDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Domain]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_TermLoanMember" xlink:type="locator" xlink:label="sgu_TermLoanMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_TermLoanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Term loan.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_TermLoanMember" xlink:to="sgu_TermLoanMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_TermLoanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Term Loan</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_TermLoanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Term Loan [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LimitedPartnersCapitalAccountLineItems" xlink:type="locator" xlink:label="us-gaap_LimitedPartnersCapitalAccountLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedPartnersCapitalAccountLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Limited Partners&apos; Capital Account [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedPartnersCapitalAccountLineItems" xlink:to="us-gaap_LimitedPartnersCapitalAccountLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedPartnersCapitalAccountLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Limited Partners Capital Account [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:type="locator" xlink:label="us-gaap_NumberOfReportableSegments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of reportable segments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfReportableSegments" xlink:to="us-gaap_NumberOfReportableSegments_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Reportable Segments</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_PartnersCapitalAccountUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of outstanding units</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest" xlink:type="locator" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of limited partner interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest" xlink:to="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Limited Liability Company L L C Or Limited Partnership L P Members Or Limited Partners Ownership Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:type="locator" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of general partner interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:to="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Limited Liability Company L L C Or Limited Partnership L P Managing Member Or General Partner Ownership Interest</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_EquityMethodInvestmentAcquiredOwnershipPercentage" xlink:type="locator" xlink:label="sgu_EquityMethodInvestmentAcquiredOwnershipPercentage" />
    <link:label xml:lang="en-US" xlink:label="sgu_EquityMethodInvestmentAcquiredOwnershipPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity method investment acquired, ownership percentage.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_EquityMethodInvestmentAcquiredOwnershipPercentage" xlink:to="sgu_EquityMethodInvestmentAcquiredOwnershipPercentage_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_NumberOfResidentialAndCommercialHomeHeatingOilAndPropaneCustomersServed" xlink:type="locator" xlink:label="sgu_NumberOfResidentialAndCommercialHomeHeatingOilAndPropaneCustomersServed" />
    <link:label xml:lang="en-US" xlink:label="sgu_NumberOfResidentialAndCommercialHomeHeatingOilAndPropaneCustomersServed_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of residential and commercial home heating oil and propane customers served.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_NumberOfResidentialAndCommercialHomeHeatingOilAndPropaneCustomersServed" xlink:to="sgu_NumberOfResidentialAndCommercialHomeHeatingOilAndPropaneCustomersServed_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_NumberOfCustomersToWhomSellGasolineAndDieselFuel" xlink:type="locator" xlink:label="sgu_NumberOfCustomersToWhomSellGasolineAndDieselFuel" />
    <link:label xml:lang="en-US" xlink:label="sgu_NumberOfCustomersToWhomSellGasolineAndDieselFuel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of customers to whom sell gasoline and diesel fuel.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_NumberOfCustomersToWhomSellGasolineAndDieselFuel" xlink:to="sgu_NumberOfCustomersToWhomSellGasolineAndDieselFuel_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_NumberOfCustomersToWhomOnlyHomeHeatingOilGasolineAndDieselWereSellsOnDeliveryOnlyBasis" xlink:type="locator" xlink:label="sgu_NumberOfCustomersToWhomOnlyHomeHeatingOilGasolineAndDieselWereSellsOnDeliveryOnlyBasis" />
    <link:label xml:lang="en-US" xlink:label="sgu_NumberOfCustomersToWhomOnlyHomeHeatingOilGasolineAndDieselWereSellsOnDeliveryOnlyBasis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of customers to whom only home heating oil gasoline and diesel were sells on delivery only basis.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_NumberOfCustomersToWhomOnlyHomeHeatingOilGasolineAndDieselWereSellsOnDeliveryOnlyBasis" xlink:to="sgu_NumberOfCustomersToWhomOnlyHomeHeatingOilGasolineAndDieselWereSellsOnDeliveryOnlyBasis_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_NumberOfServiceContractsForNaturalGasAndOtherHeatingSystems" xlink:type="locator" xlink:label="sgu_NumberOfServiceContractsForNaturalGasAndOtherHeatingSystems" />
    <link:label xml:lang="en-US" xlink:label="sgu_NumberOfServiceContractsForNaturalGasAndOtherHeatingSystems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of service contracts for natural gas and other heating systems.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_NumberOfServiceContractsForNaturalGasAndOtherHeatingSystems" xlink:to="sgu_NumberOfServiceContractsForNaturalGasAndOtherHeatingSystems_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest" xlink:type="locator" xlink:label="us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ownership interest of partnership</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest" xlink:to="us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsidiary Of Limited Liability Company Or Limited Partnership Ownership Interest</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_EquityMethodInvestmentAcquiredOwnershipPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ownership interest of Star Acquisitions Inc.</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_EquityMethodInvestmentAcquiredOwnershipPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Equity Method Investment Acquired Ownership Percentage</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_NumberOfResidentialAndCommercialHomeHeatingOilAndPropaneCustomersServed_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of residential and commercial home heating oil and propane customers served</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_NumberOfResidentialAndCommercialHomeHeatingOilAndPropaneCustomersServed_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Residential And Commercial Home Heating Oil And Propane Customers Served</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_NumberOfCustomersToWhomOnlyHomeHeatingOilGasolineAndDieselWereSellsOnDeliveryOnlyBasis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of customers to whom only home heating oil, gasoline and diesel were sells on a delivery only basis</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_NumberOfCustomersToWhomOnlyHomeHeatingOilGasolineAndDieselWereSellsOnDeliveryOnlyBasis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Customers To Whom Only Home Heating Oil Gasoline And Diesel Were Sells On Delivery Only Basis</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_NumberOfServiceContractsForNaturalGasAndOtherHeatingSystems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of service contracts for natural gas and other heating systems</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_NumberOfServiceContractsForNaturalGasAndOtherHeatingSystems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Service Contracts For Natural Gas And Other Heating Systems</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_NumberOfCustomersToWhomSellGasolineAndDieselFuel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of customers to whom sell gasoline and diesel fuel</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_NumberOfCustomersToWhomSellGasolineAndDieselFuel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Customers To Whom Sell Gasoline And Diesel Fuel</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_LineOfCreditFacilityMaximumBorrowingCapacityDuringHeatingSeason" xlink:type="locator" xlink:label="sgu_LineOfCreditFacilityMaximumBorrowingCapacityDuringHeatingSeason" />
    <link:label xml:lang="en-US" xlink:label="sgu_LineOfCreditFacilityMaximumBorrowingCapacityDuringHeatingSeason_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility maximum borrowing capacity during the heating season.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_LineOfCreditFacilityMaximumBorrowingCapacityDuringHeatingSeason" xlink:to="sgu_LineOfCreditFacilityMaximumBorrowingCapacityDuringHeatingSeason_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentFaceAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding term loan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Face Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTerm" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior secured term loan maturity period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentTerm" xlink:to="us-gaap_DebtInstrumentTerm_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non Seasonal maximum borrowing capacity under revolving credit facility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Maximum Borrowing Capacity</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LineOfCreditFacilityMaximumBorrowingCapacityDuringHeatingSeason_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum borrowing capacity (heating season December to April) under revolving credit facility</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LineOfCreditFacilityMaximumBorrowingCapacityDuringHeatingSeason_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Maximum Borrowing Capacity During Heating Season</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtConversionOriginalDebtDueDateOfDebtDayMonthAndYear" xlink:type="locator" xlink:label="us-gaap_DebtConversionOriginalDebtDueDateOfDebtDayMonthAndYear" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtConversionOriginalDebtDueDateOfDebtDayMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due date of debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtConversionOriginalDebtDueDateOfDebtDayMonthAndYear" xlink:to="us-gaap_DebtConversionOriginalDebtDueDateOfDebtDayMonthAndYear_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtConversionOriginalDebtDueDateOfDebtDayMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Conversion Original Debt Due Date Of Debt Day Month And Year</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CashEquivalentsMaturityPeriod" xlink:type="locator" xlink:label="sgu_CashEquivalentsMaturityPeriod" />
    <link:label xml:lang="en-US" xlink:label="sgu_CashEquivalentsMaturityPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash equivalents, maturity period.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CashEquivalentsMaturityPeriod" xlink:to="sgu_CashEquivalentsMaturityPeriod_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_ScheduleOfSignificantAccountingPoliciesLineItems" xlink:type="locator" xlink:label="sgu_ScheduleOfSignificantAccountingPoliciesLineItems" />
    <link:label xml:lang="en-US" xlink:label="sgu_ScheduleOfSignificantAccountingPoliciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule Of Significant Accounting Policies [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_ScheduleOfSignificantAccountingPoliciesLineItems" xlink:to="sgu_ScheduleOfSignificantAccountingPoliciesLineItems_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_ScheduleOfSignificantAccountingPoliciesTable" xlink:type="locator" xlink:label="sgu_ScheduleOfSignificantAccountingPoliciesTable" />
    <link:label xml:lang="en-US" xlink:label="sgu_ScheduleOfSignificantAccountingPoliciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule Of Significant Accounting Policies [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_ScheduleOfSignificantAccountingPoliciesTable" xlink:to="sgu_ScheduleOfSignificantAccountingPoliciesTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_ScheduleOfSignificantAccountingPoliciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Significant Accounting Policies [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_ScheduleOfSignificantAccountingPoliciesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Significant Accounting Policies [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis" xlink:type="locator" xlink:label="srt_RangeAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_RangeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeAxis" xlink:to="srt_RangeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_RangeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Range [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember" xlink:type="locator" xlink:label="srt_RangeMember" />
    <link:label xml:lang="en-US" xlink:label="srt_RangeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeMember" xlink:to="srt_RangeMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_RangeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Range [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember" xlink:type="locator" xlink:label="srt_MaximumMember" />
    <link:label xml:lang="en-US" xlink:label="srt_MaximumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MaximumMember" xlink:to="srt_MaximumMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_MaximumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember" xlink:type="locator" xlink:label="srt_MinimumMember" />
    <link:label xml:lang="en-US" xlink:label="srt_MinimumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MinimumMember" xlink:to="srt_MinimumMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_MinimumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CollateralAxis" xlink:type="locator" xlink:label="us-gaap_CollateralAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CollateralAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral Held</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CollateralAxis" xlink:to="us-gaap_CollateralAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CollateralAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Collateral [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CollateralDomain" xlink:type="locator" xlink:label="us-gaap_CollateralDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CollateralDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral Held</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CollateralDomain" xlink:to="us-gaap_CollateralDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CollateralDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Collateral [Domain]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CaptiveInsuranceCollateralMember" xlink:type="locator" xlink:label="sgu_CaptiveInsuranceCollateralMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_CaptiveInsuranceCollateralMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Captive insurance collateral.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CaptiveInsuranceCollateralMember" xlink:to="sgu_CaptiveInsuranceCollateralMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_CaptiveInsuranceCollateralMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Captive Insurance Collateral</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CaptiveInsuranceCollateralMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Captive Insurance Collateral [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:type="locator" xlink:label="us-gaap_InvestmentTypeAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentTypeAxis" xlink:to="us-gaap_InvestmentTypeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Investment Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:type="locator" xlink:label="us-gaap_InvestmentTypeCategorizationMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentTypeCategorizationMember" xlink:to="us-gaap_InvestmentTypeCategorizationMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Investment Type Categorization [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MutualFundMember" xlink:type="locator" xlink:label="us-gaap_MutualFundMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MutualFundMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mutual Funds</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MutualFundMember" xlink:to="us-gaap_MutualFundMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MutualFundMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Mutual Fund [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value By Fair Value Hierarchy Level [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurements Fair Value Hierarchy [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel1Member" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Level 1</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel1Member" xlink:to="us-gaap_FairValueInputsLevel1Member_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Inputs Level1 [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis" xlink:type="locator" xlink:label="srt_StatementScenarioAxis" />
    <link:label xml:lang="en-US" xlink:label="srt_StatementScenarioAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scenario</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementScenarioAxis" xlink:to="srt_StatementScenarioAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_StatementScenarioAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Scenario [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:type="locator" xlink:label="srt_ScenarioUnspecifiedDomain" />
    <link:label xml:lang="en-US" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scenario</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ScenarioUnspecifiedDomain" xlink:to="srt_ScenarioUnspecifiedDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Scenario Unspecified [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioForecastMember" xlink:type="locator" xlink:label="srt_ScenarioForecastMember" />
    <link:label xml:lang="en-US" xlink:label="srt_ScenarioForecastMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scenario Forecast</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ScenarioForecastMember" xlink:to="srt_ScenarioForecastMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="srt_ScenarioForecastMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Scenario Forecast [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:type="locator" xlink:label="us-gaap_IncomeStatementLocationAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement Location</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementLocationAxis" xlink:to="us-gaap_IncomeStatementLocationAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement Location [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:type="locator" xlink:label="us-gaap_IncomeStatementLocationDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement Location</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementLocationDomain" xlink:to="us-gaap_IncomeStatementLocationDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement Location [Domain]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_OperatingCostsAndExpensesMember" xlink:type="locator" xlink:label="sgu_OperatingCostsAndExpensesMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_OperatingCostsAndExpensesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Operating costs and expenses.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_OperatingCostsAndExpensesMember" xlink:to="sgu_OperatingCostsAndExpensesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_OperatingCostsAndExpensesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Delivery and branch expenses</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_OperatingCostsAndExpensesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Costs And Expenses [Member]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis" />
    <link:label xml:lang="en-US" xlink:label="dei_LegalEntityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legal Entity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_LegalEntityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Legal Entity [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityDomain" xlink:to="dei_EntityDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity [Domain]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_FinancialProductsCorporationMember" xlink:type="locator" xlink:label="sgu_FinancialProductsCorporationMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_FinancialProductsCorporationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Financial Products Corporation.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_FinancialProductsCorporationMember" xlink:to="sgu_FinancialProductsCorporationMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_FinancialProductsCorporationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Products Corporation</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_FinancialProductsCorporationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Financial Products Corporation [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_SwissReFinancialProductsCorporationMember" xlink:type="locator" xlink:label="sgu_SwissReFinancialProductsCorporationMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_SwissReFinancialProductsCorporationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Swiss Re Financial Products Corporation [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_SwissReFinancialProductsCorporationMember" xlink:to="sgu_SwissReFinancialProductsCorporationMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_SwissReFinancialProductsCorporationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsidiaries of Swiss Re</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_SwissReFinancialProductsCorporationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Swiss Re Financial Products Corporation [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retirement Plan Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Retirement Plan Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retirement Plan Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_RetirementPlanTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Retirement Plan Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PensionPlansDefinedBenefitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">New England Teamsters &amp; Trucking Industry Pension Fund</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PensionPlansDefinedBenefitMember" xlink:to="us-gaap_PensionPlansDefinedBenefitMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PensionPlansDefinedBenefitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Pension Plans Defined Benefit [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel2Member" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Significant Other Observable Inputs Level 2</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel2Member" xlink:to="us-gaap_FairValueInputsLevel2Member_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Inputs Level2 [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:type="locator" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounting Standards Update</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments For New Accounting Pronouncements [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:type="locator" xlink:label="us-gaap_TypeOfAdoptionMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounting Standards Update</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Type Of Adoption [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdate201602Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201602Member" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountingStandardsUpdate201602Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASC Topic 842</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_AccountingStandardsUpdate201602Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update201602 [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentRiskAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Instrument</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentRiskAxis" xlink:to="us-gaap_DerivativeInstrumentRiskAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instrument Risk [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:type="locator" xlink:label="us-gaap_DerivativeContractTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Contract</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeContractTypeDomain" xlink:to="us-gaap_DerivativeContractTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Contract Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:type="locator" xlink:label="us-gaap_InterestRateSwapMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestRateSwapMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest rate swap</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestRateSwapMember" xlink:to="us-gaap_InterestRateSwapMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestRateSwapMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_ScheduleOfSignificantAccountingPoliciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Significant Accounting Policies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_ScheduleOfSignificantAccountingPoliciesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Significant Accounting Policies [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CashEquivalentsMaturityPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash equivalents, highly liquid investments maturity</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CashEquivalentsMaturityPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash Equivalents Maturity Period</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash, cash equivalents, and restricted cash</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_MutualFundMeasurementInvestmentAtNetAssets" xlink:type="locator" xlink:label="sgu_MutualFundMeasurementInvestmentAtNetAssets" />
    <link:label xml:lang="en-US" xlink:label="sgu_MutualFundMeasurementInvestmentAtNetAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Mutual fund measurement investment at net assets.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_MutualFundMeasurementInvestmentAtNetAssets" xlink:to="sgu_MutualFundMeasurementInvestmentAtNetAssets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Captive insurance collateral, debt securities</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_MutualFundMeasurementInvestmentAtNetAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Captive insurance collateral, net asset value</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_MutualFundMeasurementInvestmentAtNetAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Mutual Fund Measurement Investment At Net Assets</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_RightToReceivePaymentUnderWeatherHedgeContract" xlink:type="locator" xlink:label="sgu_RightToReceivePaymentUnderWeatherHedgeContract" />
    <link:label xml:lang="en-US" xlink:label="sgu_RightToReceivePaymentUnderWeatherHedgeContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Right to receive payment under weather hedge contract.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_RightToReceivePaymentUnderWeatherHedgeContract" xlink:to="sgu_RightToReceivePaymentUnderWeatherHedgeContract_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_DerivativeMaximumPayoutUnderWeatherHedgeContract" xlink:type="locator" xlink:label="sgu_DerivativeMaximumPayoutUnderWeatherHedgeContract" />
    <link:label xml:lang="en-US" xlink:label="sgu_DerivativeMaximumPayoutUnderWeatherHedgeContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative maximum payout under weather hedge contract.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_DerivativeMaximumPayoutUnderWeatherHedgeContract" xlink:to="sgu_DerivativeMaximumPayoutUnderWeatherHedgeContract_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_AdditionalPaymentObligatedToPayIfDegreeDaysExceedTenYearAverage" xlink:type="locator" xlink:label="sgu_AdditionalPaymentObligatedToPayIfDegreeDaysExceedTenYearAverage" />
    <link:label xml:lang="en-US" xlink:label="sgu_AdditionalPaymentObligatedToPayIfDegreeDaysExceedTenYearAverage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Additional payment obligated to pay if degree days exceed ten year average.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_AdditionalPaymentObligatedToPayIfDegreeDaysExceedTenYearAverage" xlink:to="sgu_AdditionalPaymentObligatedToPayIfDegreeDaysExceedTenYearAverage_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_PaymentsAndReceivablesOfDerivativeHedgingContract" xlink:type="locator" xlink:label="sgu_PaymentsAndReceivablesOfDerivativeHedgingContract" />
    <link:label xml:lang="en-US" xlink:label="sgu_PaymentsAndReceivablesOfDerivativeHedgingContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Payments and receivables of derivative hedging contract.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_PaymentsAndReceivablesOfDerivativeHedgingContract" xlink:to="sgu_PaymentsAndReceivablesOfDerivativeHedgingContract_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_AdditionalPaymentObligatedToPayIfDegreeDaysExceedTenYearAverage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional payment obligated to pay if degree days exceed ten year average</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_AdditionalPaymentObligatedToPayIfDegreeDaysExceedTenYearAverage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Additional Payment Obligated To Pay If Degree Days Exceed Ten Year Average</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_RightToReceivePaymentUnderWeatherHedgeContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative maximum receivable</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_RightToReceivePaymentUnderWeatherHedgeContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Right To Receive Payment Under Weather Hedge Contract</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DerivativeMaximumPayoutUnderWeatherHedgeContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative maximum payout</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DerivativeMaximumPayoutUnderWeatherHedgeContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Maximum Payout Under Weather Hedge Contract</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet" xlink:type="locator" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change on weather hedge contract</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeGainLossOnDerivativeNet" xlink:to="us-gaap_DerivativeGainLossOnDerivativeNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Gain Loss On Derivative Net</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_PaymentsAndReceivablesOfDerivativeHedgingContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payments and receivables of derivative hedging contract</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_PaymentsAndReceivablesOfDerivativeHedgingContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Payments And Receivables Of Derivative Hedging Contract</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MultiemployerPlansWithdrawalObligation" xlink:type="locator" xlink:label="us-gaap_MultiemployerPlansWithdrawalObligation" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MultiemployerPlansWithdrawalObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Multiemployer plan discounted withdrawal liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MultiemployerPlansWithdrawalObligation" xlink:to="us-gaap_MultiemployerPlansWithdrawalObligation_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_MultiemployerPlansWithdrawalObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Multiemployer Plans Withdrawal Obligation</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease right-of-use assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeNotionalAmount" xlink:type="locator" xlink:label="us-gaap_DerivativeNotionalAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notional Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeNotionalAmount" xlink:to="us-gaap_DerivativeNotionalAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Notional Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:type="locator" xlink:label="us-gaap_DisaggregationOfRevenueTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisaggregationOfRevenueTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disaggregation Of Revenue [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisaggregationOfRevenueTable" xlink:to="us-gaap_DisaggregationOfRevenueTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisaggregationOfRevenueTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disaggregation Of Revenue [Table]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_HomeHeatingOilAndPropaneMember" xlink:type="locator" xlink:label="sgu_HomeHeatingOilAndPropaneMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_HomeHeatingOilAndPropaneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Home heating oil and propane.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_HomeHeatingOilAndPropaneMember" xlink:to="sgu_HomeHeatingOilAndPropaneMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_HomeHeatingOilAndPropaneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Home heating oil and propane</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_HomeHeatingOilAndPropaneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Home Heating Oil And Propane [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_OtherPetroleumProductsMember" xlink:type="locator" xlink:label="sgu_OtherPetroleumProductsMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_OtherPetroleumProductsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Other petroleum products.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_OtherPetroleumProductsMember" xlink:to="sgu_OtherPetroleumProductsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_OtherPetroleumProductsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other petroleum products</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_OtherPetroleumProductsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Petroleum Products [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_PetroleumProductsMember" xlink:type="locator" xlink:label="sgu_PetroleumProductsMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_PetroleumProductsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Petroleum products.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_PetroleumProductsMember" xlink:to="sgu_PetroleumProductsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_PetroleumProductsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Petroleum products</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_PetroleumProductsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Petroleum Products [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_EquipmentInstallationsMember" xlink:type="locator" xlink:label="sgu_EquipmentInstallationsMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_EquipmentInstallationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Equipment installations.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_EquipmentInstallationsMember" xlink:to="sgu_EquipmentInstallationsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_EquipmentInstallationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equipment installations</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_EquipmentInstallationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Equipment Installations [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_EquipmentMaintenanceServiceContractsMember" xlink:type="locator" xlink:label="sgu_EquipmentMaintenanceServiceContractsMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_EquipmentMaintenanceServiceContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Equipment maintenance service contracts.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_EquipmentMaintenanceServiceContractsMember" xlink:to="sgu_EquipmentMaintenanceServiceContractsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_EquipmentMaintenanceServiceContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equipment maintenance service contracts</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_EquipmentMaintenanceServiceContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Equipment Maintenance Service Contracts [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_BillableCallServicesMember" xlink:type="locator" xlink:label="sgu_BillableCallServicesMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_BillableCallServicesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Billable call services.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_BillableCallServicesMember" xlink:to="sgu_BillableCallServicesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_BillableCallServicesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Billable call services</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_BillableCallServicesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Billable Call Services [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:type="locator" xlink:label="us-gaap_DisaggregationOfRevenueLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisaggregationOfRevenueLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disaggregation Of Revenue [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisaggregationOfRevenueLineItems" xlink:to="us-gaap_DisaggregationOfRevenueLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DisaggregationOfRevenueLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Disaggregation Of Revenue [Line Items]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_RevenueRecognitionLineItems" xlink:type="locator" xlink:label="sgu_RevenueRecognitionLineItems" />
    <link:label xml:lang="en-US" xlink:label="sgu_RevenueRecognitionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Revenue recognition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_RevenueRecognitionLineItems" xlink:to="sgu_RevenueRecognitionLineItems_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_RevenueRecognitionTable" xlink:type="locator" xlink:label="sgu_RevenueRecognitionTable" />
    <link:label xml:lang="en-US" xlink:label="sgu_RevenueRecognitionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Revenue recognition.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_RevenueRecognitionTable" xlink:to="sgu_RevenueRecognitionTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_RevenueRecognitionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue Recognition [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_RevenueRecognitionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Recognition [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:type="locator" xlink:label="us-gaap_BalanceSheetLocationAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance Sheet Location</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BalanceSheetLocationAxis" xlink:to="us-gaap_BalanceSheetLocationAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Balance Sheet Location [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:type="locator" xlink:label="us-gaap_BalanceSheetLocationDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance Sheet Location</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BalanceSheetLocationDomain" xlink:to="us-gaap_BalanceSheetLocationDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Balance Sheet Location [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember" xlink:type="locator" xlink:label="us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Prepaid Expense and Other Current Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember" xlink:to="us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Prepaid Expenses And Other Current Assets [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherNoncurrentAssetsMember" xlink:type="locator" xlink:label="us-gaap_OtherNoncurrentAssetsMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherNoncurrentAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred Charges and Other Assets, Net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNoncurrentAssetsMember" xlink:to="us-gaap_OtherNoncurrentAssetsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherNoncurrentAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Noncurrent Assets [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_DeliveryAndBranchExpensesMember" xlink:type="locator" xlink:label="sgu_DeliveryAndBranchExpensesMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_DeliveryAndBranchExpensesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Delivery and branch expenses.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_DeliveryAndBranchExpensesMember" xlink:to="sgu_DeliveryAndBranchExpensesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_DeliveryAndBranchExpensesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Delivery and Branch Expenses</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DeliveryAndBranchExpensesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Delivery And Branch Expenses [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_RevenueRecognitionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue Recognition [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_RevenueRecognitionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Recognition [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedContractCostAmortizationPeriod" xlink:type="locator" xlink:label="us-gaap_CapitalizedContractCostAmortizationPeriod" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalizedContractCostAmortizationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contract costs, amortization period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalizedContractCostAmortizationPeriod" xlink:to="us-gaap_CapitalizedContractCostAmortizationPeriod_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalizedContractCostAmortizationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Capitalized Contract Cost Amortization Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedContractCostNetCurrent" xlink:type="locator" xlink:label="us-gaap_CapitalizedContractCostNetCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalizedContractCostNetCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred contract costs,current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalizedContractCostNetCurrent" xlink:to="us-gaap_CapitalizedContractCostNetCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalizedContractCostNetCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Capitalized Contract Cost Net Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedContractCostNetNoncurrent" xlink:type="locator" xlink:label="us-gaap_CapitalizedContractCostNetNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalizedContractCostNetNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred contract costs,non current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalizedContractCostNetNoncurrent" xlink:to="us-gaap_CapitalizedContractCostNetNoncurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalizedContractCostNetNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Capitalized Contract Cost Net Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalizedContractCostAmortization" xlink:type="locator" xlink:label="us-gaap_CapitalizedContractCostAmortization" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalizedContractCostAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of deferred contract costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalizedContractCostAmortization" xlink:to="us-gaap_CapitalizedContractCostAmortization_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalizedContractCostAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Capitalized Contract Cost Amortization</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_ContractLiabilitiesRecognitionServiceContractPeriod" xlink:type="locator" xlink:label="sgu_ContractLiabilitiesRecognitionServiceContractPeriod" />
    <link:label xml:lang="en-US" xlink:label="sgu_ContractLiabilitiesRecognitionServiceContractPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Contract liabilities recognition service contract period.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_ContractLiabilitiesRecognitionServiceContractPeriod" xlink:to="sgu_ContractLiabilitiesRecognitionServiceContractPeriod_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_ContractLiabilitiesRecognitionServiceContractPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contract liabilities recognition service contract period</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_ContractLiabilitiesRecognitionServiceContractPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Contract Liabilities Recognition Service Contract Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiability" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contract liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerLiability" xlink:to="us-gaap_ContractWithCustomerLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Contract With Customer Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contract with customer liability, revenue recognized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:to="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfCapitalUnitsTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfCapitalUnitsTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfCapitalUnitsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Capital Units [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfCapitalUnitsTable" xlink:to="us-gaap_ScheduleOfCapitalUnitsTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfCapitalUnitsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Capital Units [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareRepurchaseProgramAxis" xlink:type="locator" xlink:label="us-gaap_ShareRepurchaseProgramAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareRepurchaseProgramAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share Repurchase Program</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareRepurchaseProgramAxis" xlink:to="us-gaap_ShareRepurchaseProgramAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareRepurchaseProgramAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Repurchase Program [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareRepurchaseProgramDomain" xlink:type="locator" xlink:label="us-gaap_ShareRepurchaseProgramDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareRepurchaseProgramDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share Repurchase Program</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareRepurchaseProgramDomain" xlink:to="us-gaap_ShareRepurchaseProgramDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShareRepurchaseProgramDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Share Repurchase Program [Domain]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CommonStockRepurchaseProgramMember" xlink:type="locator" xlink:label="sgu_CommonStockRepurchaseProgramMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_CommonStockRepurchaseProgramMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock repurchase program.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CommonStockRepurchaseProgramMember" xlink:to="sgu_CommonStockRepurchaseProgramMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_CommonStockRepurchaseProgramMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repurchase Plan</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CommonStockRepurchaseProgramMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Repurchase Program [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CommonStockRepurchaseProgramUnderPrivatelyNegotiatedMember" xlink:type="locator" xlink:label="sgu_CommonStockRepurchaseProgramUnderPrivatelyNegotiatedMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_CommonStockRepurchaseProgramUnderPrivatelyNegotiatedMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock repurchase program under privately negotiated.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CommonStockRepurchaseProgramUnderPrivatelyNegotiatedMember" xlink:to="sgu_CommonStockRepurchaseProgramUnderPrivatelyNegotiatedMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_CommonStockRepurchaseProgramUnderPrivatelyNegotiatedMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock Available for Repurchase Under Privately Negotiated Transactions</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CommonStockRepurchaseProgramUnderPrivatelyNegotiatedMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Repurchase Program Under Privately Negotiated [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CommonStockRepurchaseProgramUnderOpenMarketMember" xlink:type="locator" xlink:label="sgu_CommonStockRepurchaseProgramUnderOpenMarketMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_CommonStockRepurchaseProgramUnderOpenMarketMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock repurchase program under open market.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CommonStockRepurchaseProgramUnderOpenMarketMember" xlink:to="sgu_CommonStockRepurchaseProgramUnderOpenMarketMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_CommonStockRepurchaseProgramUnderOpenMarketMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock Available for Repurchase Under Open Market Transactions</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CommonStockRepurchaseProgramUnderOpenMarketMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Repurchase Program Under Open Market [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CommonStockRepurchaseProgramUnderOpenMarketTransactionsMember" xlink:type="locator" xlink:label="sgu_CommonStockRepurchaseProgramUnderOpenMarketTransactionsMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_CommonStockRepurchaseProgramUnderOpenMarketTransactionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Common stock repurchase program under open market transactions.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CommonStockRepurchaseProgramUnderOpenMarketTransactionsMember" xlink:to="sgu_CommonStockRepurchaseProgramUnderOpenMarketTransactionsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_CommonStockRepurchaseProgramUnderOpenMarketTransactionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock Repurchase Under Open Market Transactions</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CommonStockRepurchaseProgramUnderOpenMarketTransactionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock Repurchase Program Under Open Market Transactions [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:type="locator" xlink:label="us-gaap_SubsequentEventTypeAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeAxis" xlink:to="us-gaap_SubsequentEventTypeAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:type="locator" xlink:label="us-gaap_SubsequentEventTypeDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeDomain" xlink:to="us-gaap_SubsequentEventTypeDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventMember" xlink:type="locator" xlink:label="us-gaap_SubsequentEventMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventMember" xlink:to="us-gaap_SubsequentEventMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CapitalUnitLineItems" xlink:type="locator" xlink:label="us-gaap_CapitalUnitLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalUnitLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital Unit [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalUnitLineItems" xlink:to="us-gaap_CapitalUnitLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CapitalUnitLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Capital Unit [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Company&apos;s common units repurchased and retired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased" xlink:type="locator" xlink:label="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Company&apos;s common units authorized for repurchase</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased" xlink:to="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchase Program Number Of Shares Authorized To Be Repurchased</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_AvailabilityRequiredToPayDistributionsOrRepurchaseCommonUnits" xlink:type="locator" xlink:label="sgu_AvailabilityRequiredToPayDistributionsOrRepurchaseCommonUnits" />
    <link:label xml:lang="en-US" xlink:label="sgu_AvailabilityRequiredToPayDistributionsOrRepurchaseCommonUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Availability required to pay distributions or repurchase common units.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_AvailabilityRequiredToPayDistributionsOrRepurchaseCommonUnits" xlink:to="sgu_AvailabilityRequiredToPayDistributionsOrRepurchaseCommonUnits_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_MinimumPercentageOfBorrowingCapacityToPayAnyDistributionsToUnitholdersOrRepurchaseCommonUnits" xlink:type="locator" xlink:label="sgu_MinimumPercentageOfBorrowingCapacityToPayAnyDistributionsToUnitholdersOrRepurchaseCommonUnits" />
    <link:label xml:lang="en-US" xlink:label="sgu_MinimumPercentageOfBorrowingCapacityToPayAnyDistributionsToUnitholdersOrRepurchaseCommonUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum percentage of borrowing capacity to pay any distributions to unitholders or repurchase common units.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_MinimumPercentageOfBorrowingCapacityToPayAnyDistributionsToUnitholdersOrRepurchaseCommonUnits" xlink:to="sgu_MinimumPercentageOfBorrowingCapacityToPayAnyDistributionsToUnitholdersOrRepurchaseCommonUnits_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_MinimumFixedChargeCoverageRatioForDistributionsToUnitholdersOrRepurchaseCommonUnits" xlink:type="locator" xlink:label="sgu_MinimumFixedChargeCoverageRatioForDistributionsToUnitholdersOrRepurchaseCommonUnits" />
    <link:label xml:lang="en-US" xlink:label="sgu_MinimumFixedChargeCoverageRatioForDistributionsToUnitholdersOrRepurchaseCommonUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum fixed charge coverage ratio for distributions to unit holders or repurchase common units.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_MinimumFixedChargeCoverageRatioForDistributionsToUnitholdersOrRepurchaseCommonUnits" xlink:to="sgu_MinimumFixedChargeCoverageRatioForDistributionsToUnitholdersOrRepurchaseCommonUnits_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_AvailabilityRequiredToPayDistributionsOrRepurchaseCommonUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Availability required to repurchase common units</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_AvailabilityRequiredToPayDistributionsOrRepurchaseCommonUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Availability Required To Pay Distributions Or Repurchase Common Units</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_MinimumPercentageOfBorrowingCapacityToPayAnyDistributionsToUnitholdersOrRepurchaseCommonUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of the maximum facility size on a historical proforma and forward-looking basis</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_MinimumPercentageOfBorrowingCapacityToPayAnyDistributionsToUnitholdersOrRepurchaseCommonUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Percentage Of Borrowing Capacity To Pay Any Distributions To Unitholders Or Repurchase Common Units</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_MinimumFixedChargeCoverageRatioForDistributionsToUnitholdersOrRepurchaseCommonUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum fixed charge coverage ratio for distributions to unit holders or to repurchase common units</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_MinimumFixedChargeCoverageRatioForDistributionsToUnitholdersOrRepurchaseCommonUnits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Fixed Charge Coverage Ratio For Distributions To Unitholders Or Repurchase Common Units</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_AveragePricePaidPerUnit" xlink:type="locator" xlink:label="sgu_AveragePricePaidPerUnit" />
    <link:label xml:lang="en-US" xlink:label="sgu_AveragePricePaidPerUnit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Average price paid per unit.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_AveragePricePaidPerUnit" xlink:to="sgu_AveragePricePaidPerUnit_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_PubliclyAnnouncedPlansOrProgramsAsPartOfCommonStockRepurchaseProgramMember" xlink:type="locator" xlink:label="sgu_PubliclyAnnouncedPlansOrProgramsAsPartOfCommonStockRepurchaseProgramMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_PubliclyAnnouncedPlansOrProgramsAsPartOfCommonStockRepurchaseProgramMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Publicly announced plans or programs as part of common stock repurchase program.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_PubliclyAnnouncedPlansOrProgramsAsPartOfCommonStockRepurchaseProgramMember" xlink:to="sgu_PubliclyAnnouncedPlansOrProgramsAsPartOfCommonStockRepurchaseProgramMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_PubliclyAnnouncedPlansOrProgramsAsPartOfCommonStockRepurchaseProgramMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Publicly Announced Plans or Programs As Part of Repurchase Plan</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_PubliclyAnnouncedPlansOrProgramsAsPartOfCommonStockRepurchaseProgramMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Publicly Announced Plans Or Programs As Part Of Common Stock Repurchase Program [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveTerseLabel">Total Number of Units Purchased</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_AveragePricePaidPerUnit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Average Price Paid per Unit</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_AveragePricePaidPerUnit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Average Price Paid Per Unit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased" xlink:type="locator" xlink:label="us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum Number of Units that May Yet Be Purchased</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased" xlink:to="us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_PrivateTransactionMember" xlink:type="locator" xlink:label="sgu_PrivateTransactionMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_PrivateTransactionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Private transaction.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_PrivateTransactionMember" xlink:to="sgu_PrivateTransactionMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_PrivateTransactionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Private Transaction</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_PrivateTransactionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Private Transaction [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:type="locator" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Company&apos;s common units repurchased</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedDuringPeriodShares" xlink:to="us-gaap_StockRepurchasedDuringPeriodShares_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchased During Period Shares</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable" xlink:type="locator" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Securities Available For Sale [Table]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities Available For Sale [Table]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:type="locator" xlink:label="us-gaap_CorporateDebtSecuritiesMember" />
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    <link:loc xlink:href="sgu-20200630.xsd#sgu_ForeignBondsAndNotesMember" xlink:type="locator" xlink:label="sgu_ForeignBondsAndNotesMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_ForeignBondsAndNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Foreign bonds and notes.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:type="locator" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Amortized Cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:to="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Available For Sale Debt Securities Amortized Cost Basis</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross Unrealized Gain</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gross Unrealized (Loss)</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel">Fair Value</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due within one year</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Due after one year through five years</link:label>
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    <link:loc xlink:href="sgu-20200630.xsd#sgu_SwapContractOneMember" xlink:type="locator" xlink:label="sgu_SwapContractOneMember" />
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    <link:loc xlink:href="sgu-20200630.xsd#sgu_InternalFuelUsageCallAndSwapContractMember" xlink:type="locator" xlink:label="sgu_InternalFuelUsageCallAndSwapContractMember" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ShortMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_ShortMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Short [Member]</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_LongMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long</link:label>
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    <link:loc xlink:href="sgu-20200630.xsd#sgu_DerivativeFairValueGrossAmountNotOffsetFinancialInstrumentsNet" xlink:type="locator" xlink:label="sgu_DerivativeFairValueGrossAmountNotOffsetFinancialInstrumentsNet" />
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    <link:loc xlink:href="sgu-20200630.xsd#sgu_CashCollateralReceivedFromNotOffsetAgainstDerivativeAssetsAndLiabilities" xlink:type="locator" xlink:label="sgu_CashCollateralReceivedFromNotOffsetAgainstDerivativeAssetsAndLiabilities" />
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    <link:label xml:lang="en-US" xlink:label="sgu_FairValuesOfFinancialAssetsAndLiabilitiesIncludingDerivativeFinancialInstrumentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Values Of Financial Assets And Liabilities Including Derivative Financial Instruments [Table]</link:label>
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    <link:loc xlink:href="sgu-20200630.xsd#sgu_DeferredChargesAndOtherAssetsNetMember" xlink:type="locator" xlink:label="sgu_DeferredChargesAndOtherAssetsNetMember" />
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    <link:label xml:lang="en-US" xlink:label="sgu_DeferredChargesAndOtherAssetsNetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Deferred charges and other assets, net</link:label>
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    <link:loc xlink:href="sgu-20200630.xsd#sgu_LongTermDerivativeAssetsMember" xlink:type="locator" xlink:label="sgu_LongTermDerivativeAssetsMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_LongTermDerivativeAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Long term derivative assets.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_LongTermDerivativeAssetsMember" xlink:to="sgu_LongTermDerivativeAssetsMember_lbl" />
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    <link:label xml:lang="en-US" xlink:label="sgu_LongTermDerivativeAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Derivative Assets [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherNoncurrentLiabilitiesMember" xlink:type="locator" xlink:label="us-gaap_OtherNoncurrentLiabilitiesMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherNoncurrentLiabilitiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other long-term liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNoncurrentLiabilitiesMember" xlink:to="us-gaap_OtherNoncurrentLiabilitiesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OtherNoncurrentLiabilitiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Other Noncurrent Liabilities [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_FairValuesOfFinancialAssetsAndLiabilitiesIncludingDerivativeFinancialInstrumentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Values Of Financial Assets And Liabilities Including Derivative Financial Instruments [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_FairValuesOfFinancialAssetsAndLiabilitiesIncludingDerivativeFinancialInstrumentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Fair Values Of Financial Assets And Liabilities Including Derivative Financial Instruments [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:type="locator" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross Assets Recognized</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Fair Value Of Derivative Asset</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAssetFairValueGrossLiability" xlink:type="locator" xlink:label="us-gaap_DerivativeAssetFairValueGrossLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeAssetFairValueGrossLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gross Liabilities Offset in the Statement of Financial Position</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeAssetFairValueGrossLiability" xlink:to="us-gaap_DerivativeAssetFairValueGrossLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeAssetFairValueGrossLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Asset Fair Value Gross Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_DerivativeAssetsNoncurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Assets (Liabilities) Presented in the Statement of Financial Position</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Assets Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeCollateralObligationToReturnSecurities" xlink:type="locator" xlink:label="us-gaap_DerivativeCollateralObligationToReturnSecurities" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeCollateralObligationToReturnSecurities" xlink:to="us-gaap_DerivativeCollateralObligationToReturnSecurities_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeCollateralObligationToReturnSecurities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Collateral Obligation To Return Securities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeCollateralObligationToReturnCash" xlink:type="locator" xlink:label="us-gaap_DerivativeCollateralObligationToReturnCash" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral" xlink:type="locator" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_DerivativeLiabilitiesNoncurrent" />
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    <link:label xml:lang="en-US" xlink:label="sgu_CashCollateralReceivedFromNotOffsetAgainstDerivativeAssetsAndLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash Collateral Received From Not Offset Against Derivative Assets And Liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gross Amounts Not Offset in the Statement of Financial Position, Net Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostOfSalesMember" xlink:type="locator" xlink:label="us-gaap_CostOfSalesMember" />
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    <link:loc xlink:href="sgu-20200630.xsd#sgu_CostOfServicesMember" xlink:type="locator" xlink:label="sgu_CostOfServicesMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_CostOfServicesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cost of services.</link:label>
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    <link:label xml:lang="en-US" xlink:label="us-gaap_CustomerListsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer Lists</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CustomerListsMember" xlink:to="us-gaap_CustomerListsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CustomerListsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Customer Lists [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_TradeNamesAndOtherIntangiblesMember" xlink:type="locator" xlink:label="sgu_TradeNamesAndOtherIntangiblesMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_TradeNamesAndOtherIntangiblesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Trade names and other intangibles.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_TradeNamesAndOtherIntangiblesMember" xlink:to="sgu_TradeNamesAndOtherIntangiblesMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_TradeNamesAndOtherIntangiblesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trade Names And Other Intangibles</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_TradeNamesAndOtherIntangiblesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Trade Names And Other Intangibles [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite Lived Intangible Assets [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross Carrying Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsGross" xlink:to="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accum. Amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Accumulated Amortization</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:type="locator" xlink:label="us-gaap_AmortizationOfIntangibleAssets" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization expense for intangible assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfIntangibleAssets" xlink:to="us-gaap_AmortizationOfIntangibleAssets_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Of Intangible Assets</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_LinesOfCreditCurrentCarryingValue" xlink:type="locator" xlink:label="sgu_LinesOfCreditCurrentCarryingValue" />
    <link:label xml:lang="en-US" xlink:label="sgu_LinesOfCreditCurrentCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lines of credit current carrying value.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_LinesOfCreditCurrentCarryingValue" xlink:to="sgu_LinesOfCreditCurrentCarryingValue_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:type="locator" xlink:label="us-gaap_RevolvingCreditFacilityMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving Credit Facility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevolvingCreditFacilityMember" xlink:to="us-gaap_RevolvingCreditFacilityMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LinesOfCreditCurrentCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit facility borrowings, carrying Amount</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LinesOfCreditCurrentCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lines Of Credit Current Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt" xlink:type="locator" xlink:label="us-gaap_LongTermDebt" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt, carrying Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebt" xlink:to="us-gaap_LongTermDebt_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansPayableToBankCurrent" xlink:type="locator" xlink:label="us-gaap_LoansPayableToBankCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LoansPayableToBankCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current maturities of long-term debt, carrying Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansPayableToBankCurrent" xlink:to="us-gaap_LoansPayableToBankCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LoansPayableToBankCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Loans Payable To Bank Current</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Long-term debt</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_LinesOfCreditCurrentFairValue" xlink:type="locator" xlink:label="sgu_LinesOfCreditCurrentFairValue" />
    <link:label xml:lang="en-US" xlink:label="sgu_LinesOfCreditCurrentFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lines of credit current fair value.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_LinesOfCreditCurrentFairValue" xlink:to="sgu_LinesOfCreditCurrentFairValue_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_LongtermDebtFairValueCurrent" xlink:type="locator" xlink:label="sgu_LongtermDebtFairValueCurrent" />
    <link:label xml:lang="en-US" xlink:label="sgu_LongtermDebtFairValueCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term debt, fair value, current.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_LongtermDebtFairValueCurrent" xlink:to="sgu_LongtermDebtFairValueCurrent_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_LongTermDebtNoncurrentFairValue" xlink:type="locator" xlink:label="sgu_LongTermDebtNoncurrentFairValue" />
    <link:label xml:lang="en-US" xlink:label="sgu_LongTermDebtNoncurrentFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term debt, noncurrent, fair value.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_LongTermDebtNoncurrentFairValue" xlink:to="sgu_LongTermDebtNoncurrentFairValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_LinesOfCreditCurrentFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit facility borrowings, fair value</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LinesOfCreditCurrentFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lines Of Credit Current Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:type="locator" xlink:label="us-gaap_LongTermDebtFairValue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt, fair value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtFairValue" xlink:to="us-gaap_LongTermDebtFairValue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Fair Value</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LongtermDebtFairValueCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current maturities of long-term debt, fair value</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LongtermDebtFairValueCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Longterm Debt Fair Value Current</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LongTermDebtNoncurrentFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term portion of debt, fair value</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LongTermDebtNoncurrentFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Noncurrent Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredFinanceCostsNet" xlink:type="locator" xlink:label="us-gaap_DeferredFinanceCostsNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unamortized debt issuance costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredFinanceCostsNet" xlink:to="us-gaap_DeferredFinanceCostsNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Finance Costs Net</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_LineOfCreditFacilityAdditionalBorrowingCapacityForWorkingCapitalNeeds" xlink:type="locator" xlink:label="sgu_LineOfCreditFacilityAdditionalBorrowingCapacityForWorkingCapitalNeeds" />
    <link:label xml:lang="en-US" xlink:label="sgu_LineOfCreditFacilityAdditionalBorrowingCapacityForWorkingCapitalNeeds_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility additional borrowing capacity for working capital needs.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_LineOfCreditFacilityAdditionalBorrowingCapacityForWorkingCapitalNeeds" xlink:to="sgu_LineOfCreditFacilityAdditionalBorrowingCapacityForWorkingCapitalNeeds_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Redemption, Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPeriodAxis" xlink:to="us-gaap_DebtInstrumentRedemptionPeriodAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Period [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Redemption, Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRedemptionPeriodDomain" xlink:to="us-gaap_DebtInstrumentRedemptionPeriodDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Period [Domain]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_QuarterlyMember" xlink:type="locator" xlink:label="sgu_QuarterlyMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_QuarterlyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Quarterly.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_QuarterlyMember" xlink:to="sgu_QuarterlyMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_QuarterlyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Quarterly</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_QuarterlyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Quarterly [Member]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_AnnuallyMember" xlink:type="locator" xlink:label="sgu_AnnuallyMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_AnnuallyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Annually [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_AnnuallyMember" xlink:to="sgu_AnnuallyMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_AnnuallyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Annually</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_AnnuallyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Annually [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LineOfCreditFacilityAdditionalBorrowingCapacityForWorkingCapitalNeeds_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of line of credit for working capital purposes</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LineOfCreditFacilityAdditionalBorrowingCapacityForWorkingCapitalNeeds_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Additional Borrowing Capacity For Working Capital Needs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityExpirationDate1" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior secured term loan maturity date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityExpirationDate1" xlink:to="us-gaap_LineOfCreditFacilityExpirationDate1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Expiration Date1</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_MaximumIncreaseAllowedWithoutBankConsulting" xlink:type="locator" xlink:label="sgu_MaximumIncreaseAllowedWithoutBankConsulting" />
    <link:label xml:lang="en-US" xlink:label="sgu_MaximumIncreaseAllowedWithoutBankConsulting_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Maximum increase allowed without bank consulting.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_MaximumIncreaseAllowedWithoutBankConsulting" xlink:to="sgu_MaximumIncreaseAllowedWithoutBankConsulting_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_MaximumIncreaseAllowedWithoutBankConsulting_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Facility size that can be increased without consulting bank group</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_MaximumIncreaseAllowedWithoutBankConsulting_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Maximum Increase Allowed Without Bank Consulting</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_AdditionalAnnualPaymentToTermLoanFacilityPercentageOfExcessCashFlow" xlink:type="locator" xlink:label="sgu_AdditionalAnnualPaymentToTermLoanFacilityPercentageOfExcessCashFlow" />
    <link:label xml:lang="en-US" xlink:label="sgu_AdditionalAnnualPaymentToTermLoanFacilityPercentageOfExcessCashFlow_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Additional annual payment to term loan facility, percentage of excess cash flow.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_AdditionalAnnualPaymentToTermLoanFacilityPercentageOfExcessCashFlow" xlink:to="sgu_AdditionalAnnualPaymentToTermLoanFacilityPercentageOfExcessCashFlow_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentPeriodicPaymentPrincipal" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Term loan periodic payment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentPeriodicPaymentPrincipal" xlink:to="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Periodic Payment Principal</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_AdditionalAnnualPaymentToTermLoanFacilityPercentageOfExcessCashFlow_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Term loan annual payment percentage</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_AdditionalAnnualPaymentToTermLoanFacilityPercentageOfExcessCashFlow_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Additional Annual Payment To Term Loan Facility Percentage Of Excess Cash Flow</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, effective interest rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:to="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Interest Rate Effective Percentage</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodTwo" xlink:type="locator" xlink:label="sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodTwo" />
    <link:label xml:lang="en-US" xlink:label="sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility unused capacity commitment fee percentage period two.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodTwo" xlink:to="sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodTwo_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodOne" xlink:type="locator" xlink:label="sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodOne" />
    <link:label xml:lang="en-US" xlink:label="sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodOne_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of credit facility unused capacity commitment fee percentage period one.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodOne" xlink:to="sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodOne_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodOne_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitment fee on the unused portion of the facility from December through April</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodOne_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Unused Capacity Commitment Fee Percentage Period One</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitment fee on the unused portion of the facility from May through November</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentagePeriodTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Line Of Credit Facility Unused Capacity Commitment Fee Percentage Period Two</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_MinimumFixedChargeCoverageRatioOnRevolvingCreditFacilities" xlink:type="locator" xlink:label="sgu_MinimumFixedChargeCoverageRatioOnRevolvingCreditFacilities" />
    <link:label xml:lang="en-US" xlink:label="sgu_MinimumFixedChargeCoverageRatioOnRevolvingCreditFacilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum fixed charge coverage ratio on revolving credit facilities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_MinimumFixedChargeCoverageRatioOnRevolvingCreditFacilities" xlink:to="sgu_MinimumFixedChargeCoverageRatioOnRevolvingCreditFacilities_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_AvailabilityPercentageToMaximumFacilitySize" xlink:type="locator" xlink:label="sgu_AvailabilityPercentageToMaximumFacilitySize" />
    <link:label xml:lang="en-US" xlink:label="sgu_AvailabilityPercentageToMaximumFacilitySize_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Availability percentage to maximum facility size.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_AvailabilityPercentageToMaximumFacilitySize" xlink:to="sgu_AvailabilityPercentageToMaximumFacilitySize_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_DebtInstrumentLeverageRatioPeriodOne" xlink:type="locator" xlink:label="sgu_DebtInstrumentLeverageRatioPeriodOne" />
    <link:label xml:lang="en-US" xlink:label="sgu_DebtInstrumentLeverageRatioPeriodOne_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument leverage ratio period one.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_DebtInstrumentLeverageRatioPeriodOne" xlink:to="sgu_DebtInstrumentLeverageRatioPeriodOne_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_DebtInstrumentLeverageRatioPeriodTwo" xlink:type="locator" xlink:label="sgu_DebtInstrumentLeverageRatioPeriodTwo" />
    <link:label xml:lang="en-US" xlink:label="sgu_DebtInstrumentLeverageRatioPeriodTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument leverage ratio period two.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_DebtInstrumentLeverageRatioPeriodTwo" xlink:to="sgu_DebtInstrumentLeverageRatioPeriodTwo_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_MinimumFixedChargeCoverageRatioOnRevolvingCreditFacilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum fixed charge coverage ratio</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_MinimumFixedChargeCoverageRatioOnRevolvingCreditFacilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Fixed Charge Coverage Ratio On Revolving Credit Facilities</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_AvailabilityPercentageToMaximumFacilitySize_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Availability percentage to maximum facility size</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_AvailabilityPercentageToMaximumFacilitySize_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Availability Percentage To Maximum Facility Size</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DebtInstrumentLeverageRatioPeriodOne_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior secured leverage ratio during quarters ending June or September</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DebtInstrumentLeverageRatioPeriodOne_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Leverage Ratio Period One</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DebtInstrumentLeverageRatioPeriodTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior secured leverage ratio during quarters ending December or March</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DebtInstrumentLeverageRatioPeriodTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Leverage Ratio Period Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:type="locator" xlink:label="us-gaap_LettersOfCreditOutstandingAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Letters of credit issued and outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LettersOfCreditOutstandingAmount" xlink:to="us-gaap_LettersOfCreditOutstandingAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LettersOfCreditOutstandingAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Letters Of Credit Outstanding Amount</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_LinesOfCreditCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Revolving credit facility outstanding</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_AvailabilityUnderCreditAgreement" xlink:type="locator" xlink:label="sgu_AvailabilityUnderCreditAgreement" />
    <link:label xml:lang="en-US" xlink:label="sgu_AvailabilityUnderCreditAgreement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Availability under credit agreement.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_AvailabilityUnderCreditAgreement" xlink:to="sgu_AvailabilityUnderCreditAgreement_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_AvailabilityUnderCreditAgreement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Availability under credit agreement</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_AvailabilityUnderCreditAgreement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Availability Under Credit Agreement</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_DeferredTaxExpenseBenefit" xlink:type="locator" xlink:label="sgu_DeferredTaxExpenseBenefit" />
    <link:label xml:lang="en-US" xlink:label="sgu_DeferredTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred tax expense (benefit).</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_DeferredTaxExpenseBenefit" xlink:to="sgu_DeferredTaxExpenseBenefit_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract" xlink:type="locator" xlink:label="us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred Income Tax Assets And Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract" xlink:to="us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Components Of Deferred Tax Assets And Liabilities [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Income (loss) before income taxes</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current income tax expense (benefit)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Current Income Tax Expense Benefit</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DeferredTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred income tax expense (benefit)</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DeferredTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Expense Benefit</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total income tax expense (benefit)</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_IncomeTaxesTextualAbstract" xlink:type="locator" xlink:label="sgu_IncomeTaxesTextualAbstract" />
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeTaxesTextualAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income Taxes Textual [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_IncomeTaxesTextualAbstract" xlink:to="sgu_IncomeTaxesTextualAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeTaxesTextualAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Taxes Textual [Abstract]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_IncomeTaxDisclosureLineItems" xlink:type="locator" xlink:label="sgu_IncomeTaxDisclosureLineItems" />
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeTaxDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income Tax Disclosure [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_IncomeTaxDisclosureLineItems" xlink:to="sgu_IncomeTaxDisclosureLineItems_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_IncomeTaxDisclosureTable" xlink:type="locator" xlink:label="sgu_IncomeTaxDisclosureTable" />
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeTaxDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income Tax Disclosure [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_IncomeTaxDisclosureTable" xlink:to="sgu_IncomeTaxDisclosureTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeTaxDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Disclosure [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeTaxDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxAuthorityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Authority</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityAxis" xlink:to="us-gaap_IncomeTaxAuthorityAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxAuthorityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Authority [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxAuthorityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Authority</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityDomain" xlink:to="us-gaap_IncomeTaxAuthorityDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxAuthorityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Authority [Domain]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_FederalMember" xlink:type="locator" xlink:label="sgu_FederalMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_FederalMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Federal [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_FederalMember" xlink:to="sgu_FederalMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_FederalMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_FederalMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Federal [Member]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NY" xlink:type="locator" xlink:label="stpr_NY" />
    <link:label xml:lang="en-US" xlink:label="stpr_NY_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">New York</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_NY" xlink:to="stpr_NY_lbl" />
    <link:label xml:lang="en-US" xlink:label="stpr_NY_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">NEW YORK</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_CT" xlink:type="locator" xlink:label="stpr_CT" />
    <link:label xml:lang="en-US" xlink:label="stpr_CT_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Connecticut</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_CT" xlink:to="stpr_CT_lbl" />
    <link:label xml:lang="en-US" xlink:label="stpr_CT_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">CONNECTICUT</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_PA" xlink:type="locator" xlink:label="stpr_PA" />
    <link:label xml:lang="en-US" xlink:label="stpr_PA_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pennsylvania</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_PA" xlink:to="stpr_PA_lbl" />
    <link:label xml:lang="en-US" xlink:label="stpr_PA_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">PENNSYLVANIA</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NJ" xlink:type="locator" xlink:label="stpr_NJ" />
    <link:label xml:lang="en-US" xlink:label="stpr_NJ_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">New Jersey</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_NJ" xlink:to="stpr_NJ_lbl" />
    <link:label xml:lang="en-US" xlink:label="stpr_NJ_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">NEW JERSEY</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeTaxDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Disclosure [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeTaxDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecognized income tax benefits</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate" xlink:to="us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Unrecognized Tax Benefits That Would Impact Effective Tax Rate</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_IncomeTaxExaminationYearsOpenForExamination" xlink:type="locator" xlink:label="sgu_IncomeTaxExaminationYearsOpenForExamination" />
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeTaxExaminationYearsOpenForExamination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income Tax Examination, Years Open for Examination</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_IncomeTaxExaminationYearsOpenForExamination" xlink:to="sgu_IncomeTaxExaminationYearsOpenForExamination_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Disclosure [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeTaxExaminationYearsOpenForExamination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of years for examination</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeTaxExaminationYearsOpenForExamination_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Examination Years Open For Examination</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_OperatingLeaseExpirationYear" xlink:type="locator" xlink:label="sgu_OperatingLeaseExpirationYear" />
    <link:label xml:lang="en-US" xlink:label="sgu_OperatingLeaseExpirationYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Operating Lease Expiration Year</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_OperatingLeaseExpirationYear" xlink:to="sgu_OperatingLeaseExpirationYear_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_LesseeOperatingLeaseOptionToExtendTerm" xlink:type="locator" xlink:label="sgu_LesseeOperatingLeaseOptionToExtendTerm" />
    <link:label xml:lang="en-US" xlink:label="sgu_LesseeOperatingLeaseOptionToExtendTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessee operating lease option to extend term.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_LesseeOperatingLeaseOptionToExtendTerm" xlink:to="sgu_LesseeOperatingLeaseOptionToExtendTerm_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable" xlink:type="locator" xlink:label="us-gaap_LesseeLeaseDescriptionTable" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeLeaseDescriptionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee Lease Description [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeLeaseDescriptionTable" xlink:to="us-gaap_LesseeLeaseDescriptionTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeLeaseDescriptionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Lease Description [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems" xlink:type="locator" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee Lease Description [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeLeaseDescriptionLineItems" xlink:to="us-gaap_LesseeLeaseDescriptionLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Lease Description [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_OperatingLeaseExpirationYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease expiration year</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_OperatingLeaseExpirationYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Expiration Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseTermOfContract" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseTermOfContract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseTermOfContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease, term of contract</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseTermOfContract" xlink:to="us-gaap_LesseeOperatingLeaseTermOfContract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseTermOfContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Term Of Contract</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LesseeOperatingLeaseOptionToExtendTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease, option to extend, term</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LesseeOperatingLeaseOptionToExtendTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Option To Extend Term</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract" xlink:type="locator" xlink:label="sgu_CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract" />
    <link:label xml:lang="en-US" xlink:label="sgu_CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash paid for amounts included in the measurement of lease liabilities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract" xlink:to="sgu_CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseCostAbstract" xlink:type="locator" xlink:label="us-gaap_LeaseCostAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseCostAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease cost:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseCostAbstract" xlink:to="us-gaap_LeaseCostAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseCostAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lease Cost [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseCost" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseCost" xlink:to="us-gaap_OperatingLeaseCost_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermLeaseCost" xlink:type="locator" xlink:label="us-gaap_ShortTermLeaseCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShortTermLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short-term lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermLeaseCost" xlink:to="us-gaap_ShortTermLeaseCost_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ShortTermLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Short Term Lease Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableLeaseCost" xlink:type="locator" xlink:label="us-gaap_VariableLeaseCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VariableLeaseCost" xlink:to="us-gaap_VariableLeaseCost_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_VariableLeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Variable Lease Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseCost" xlink:type="locator" xlink:label="us-gaap_LeaseCost" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total lease cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseCost" xlink:to="us-gaap_LeaseCost_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LeaseCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lease Cost</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid for amounts included in the measurement of lease liabilities</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash Paid For Amounts Included In The Measurement Of Lease Liabilities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasePayments" xlink:type="locator" xlink:label="us-gaap_OperatingLeasePayments" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasePayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating cash flows from operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasePayments" xlink:to="us-gaap_OperatingLeasePayments_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasePayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Payments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:type="locator" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Right-of-use assets obtained in exchange for new operating lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:to="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Right Of Use Asset Obtained In Exchange For Operating Lease Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average remaining lease term - operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:to="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Weighted Average Remaining Lease Term1</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average discount rate - operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:to="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Weighted Average Discount Rate Percent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining three months of fiscal year 2020</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Remainder Of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due After Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total undiscounted lease payments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:type="locator" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less imputed interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Undiscounted Excess Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLiability" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiability_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Liability</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2020</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Leases Future Minimum Payments Due Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Leases Future Minimum Payments Due In Two Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Leases Future Minimum Payments Due In Three Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Leases Future Minimum Payments Due In Four Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Leases Future Minimum Payments Due In Five Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Leases Future Minimum Payments Due Thereafter</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total future minimum lease payments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDue_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Operating Leases Future Minimum Payments Due</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CashPaidDuringPeriodForAbstract" xlink:type="locator" xlink:label="sgu_CashPaidDuringPeriodForAbstract" />
    <link:label xml:lang="en-US" xlink:label="sgu_CashPaidDuringPeriodForAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash paid during the period for:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CashPaidDuringPeriodForAbstract" xlink:to="sgu_CashPaidDuringPeriodForAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_CashPaidDuringPeriodForAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid during the period for:</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CashPaidDuringPeriodForAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash Paid During Period For [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:type="locator" xlink:label="us-gaap_IncomeTaxesPaidNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income taxes, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxesPaidNet" xlink:to="us-gaap_IncomeTaxesPaidNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Taxes Paid Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestPaidNet" xlink:type="locator" xlink:label="us-gaap_InterestPaidNet" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaidNet" xlink:to="us-gaap_InterestPaidNet_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Interest Paid Net</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CashFlowSupplementalDisclosuresLineItems" xlink:type="locator" xlink:label="sgu_CashFlowSupplementalDisclosuresLineItems" />
    <link:label xml:lang="en-US" xlink:label="sgu_CashFlowSupplementalDisclosuresLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash Flow Supplemental Disclosures [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CashFlowSupplementalDisclosuresLineItems" xlink:to="sgu_CashFlowSupplementalDisclosuresLineItems_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CashFlowSupplementalDisclosuresTable" xlink:type="locator" xlink:label="sgu_CashFlowSupplementalDisclosuresTable" />
    <link:label xml:lang="en-US" xlink:label="sgu_CashFlowSupplementalDisclosuresTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash Flow Supplemental Disclosures [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CashFlowSupplementalDisclosuresTable" xlink:to="sgu_CashFlowSupplementalDisclosuresTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_CashFlowSupplementalDisclosuresTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash Flow Supplemental Disclosures [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CashFlowSupplementalDisclosuresTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash Flow Supplemental Disclosures [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CashFlowSupplementalDisclosuresLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash Flow Supplemental Disclosures [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CashFlowSupplementalDisclosuresLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cash Flow Supplemental Disclosures [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Tax payments</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_DilutiveImpactOfTheoreticalDistribution" xlink:type="locator" xlink:label="sgu_DilutiveImpactOfTheoreticalDistribution" />
    <link:label xml:lang="en-US" xlink:label="sgu_DilutiveImpactOfTheoreticalDistribution_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Dilutive impact of theoretical distribution.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_DilutiveImpactOfTheoreticalDistribution" xlink:to="sgu_DilutiveImpactOfTheoreticalDistribution_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_LimitedPartnersInterestInNetIncomeLossDilutive" xlink:type="locator" xlink:label="sgu_LimitedPartnersInterestInNetIncomeLossDilutive" />
    <link:label xml:lang="en-US" xlink:label="sgu_LimitedPartnersInterestInNetIncomeLossDilutive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Limited partners interest in net income loss dilutive .</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_LimitedPartnersInterestInNetIncomeLossDilutive" xlink:to="sgu_LimitedPartnersInterestInNetIncomeLossDilutive_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_IncomeLossFromOperationsPerOutstandingLimitedPartnershipUnitBasicAndDiluted" xlink:type="locator" xlink:label="sgu_IncomeLossFromOperationsPerOutstandingLimitedPartnershipUnitBasicAndDiluted" />
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeLossFromOperationsPerOutstandingLimitedPartnershipUnitBasicAndDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Income loss from operations per outstanding limited partnership unit basic and diluted.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_IncomeLossFromOperationsPerOutstandingLimitedPartnershipUnitBasicAndDiluted" xlink:to="sgu_IncomeLossFromOperationsPerOutstandingLimitedPartnershipUnitBasicAndDiluted_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_DilutiveImpactOfTheoreticalDistributionOfEarnings" xlink:type="locator" xlink:label="sgu_DilutiveImpactOfTheoreticalDistributionOfEarnings" />
    <link:label xml:lang="en-US" xlink:label="sgu_DilutiveImpactOfTheoreticalDistributionOfEarnings_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Dilutive impact of theoretical distribution of earnings.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_DilutiveImpactOfTheoreticalDistributionOfEarnings" xlink:to="sgu_DilutiveImpactOfTheoreticalDistributionOfEarnings_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EarningsPerShareBasicAndDilutedAbstract" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareBasicAndDilutedAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareBasicAndDilutedAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic and Diluted Earnings Per Limited Partner:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasicAndDilutedAbstract" xlink:to="us-gaap_EarningsPerShareBasicAndDilutedAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareBasicAndDilutedAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share Basic And Diluted [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossAllocatedToGeneralPartners_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel">Less General Partner&#8217;s interest in net income (loss)</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossAllocatedToLimitedPartners_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net income (loss) available to limited partners</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DilutiveImpactOfTheoreticalDistribution_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less dilutive impact of theoretical distribution of earnings under FASB ASC 260-10-45-60</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DilutiveImpactOfTheoreticalDistribution_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Dilutive Impact Of Theoretical Distribution</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_LimitedPartnersInterestInNetIncomeLossDilutive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Limited Partner&#8217;s interest in net income (loss) under FASB ASC 260-10-45-60</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDilutedAbstract" xlink:type="locator" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDilutedAbstract" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDilutedAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Per unit data:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDilutedAbstract" xlink:to="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDilutedAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDilutedAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Net Income Loss Per Outstanding Limited Partnership And General Partnership Unit Basic And Diluted [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeLossFromOperationsPerOutstandingLimitedPartnershipUnitBasicAndDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic and diluted net income (loss) available to limited partners</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_IncomeLossFromOperationsPerOutstandingLimitedPartnershipUnitBasicAndDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Income Loss From Operations Per Outstanding Limited Partnership Unit Basic And Diluted</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DilutiveImpactOfTheoreticalDistributionOfEarnings_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less dilutive impact of theoretical distribution of earnings under FASB ASC 260-10-45-60</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_DilutiveImpactOfTheoreticalDistributionOfEarnings_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Dilutive Impact Of Theoretical Distribution Of Earnings</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Limited Partner&#8217;s interest in net income (loss) under FASB ASC 260-10-45-60</link:label>
    <link:label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted average number of Limited Partner units outstanding</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssets" xlink:type="locator" xlink:label="sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssets" />
    <link:label xml:lang="en-US" xlink:label="sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed intangible assets.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssets" xlink:to="sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssets_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapital" xlink:type="locator" xlink:label="sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapital" />
    <link:label xml:lang="en-US" xlink:label="sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed working capital.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapital" xlink:to="sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapital_lbl" />
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    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTable" xlink:to="us-gaap_SubsequentEventTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Table]</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_CustomerListAndAssetsOfHeatingOilDealerMember" xlink:type="locator" xlink:label="sgu_CustomerListAndAssetsOfHeatingOilDealerMember" />
    <link:label xml:lang="en-US" xlink:label="sgu_CustomerListAndAssetsOfHeatingOilDealerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Customer list and assets of heating oil dealer.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_CustomerListAndAssetsOfHeatingOilDealerMember" xlink:to="sgu_CustomerListAndAssetsOfHeatingOilDealerMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="sgu_CustomerListAndAssetsOfHeatingOilDealerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer List and Assets of Heating Oil Dealer</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_CustomerListAndAssetsOfHeatingOilDealerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Customer List And Assets Of Heating Oil Dealer [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsAxis" xlink:type="locator" xlink:label="us-gaap_DividendsAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsAxis" xlink:to="us-gaap_DividendsAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Dividends [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsDomain" xlink:type="locator" xlink:label="us-gaap_DividendsDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsDomain" xlink:to="us-gaap_DividendsDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Dividends [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendDeclaredMember" xlink:type="locator" xlink:label="us-gaap_DividendDeclaredMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendDeclaredMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend Declared</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendDeclaredMember" xlink:to="us-gaap_DividendDeclaredMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendDeclaredMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Dividend Declared [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:type="locator" xlink:label="us-gaap_SubsequentEventLineItems" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventLineItems" xlink:to="us-gaap_SubsequentEventLineItems_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate purchase price allocation, intangible assets</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangible Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate purchase price allocation, fixed assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" xlink:to="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross purchase price increased (reduced) by working capital credits</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Working Capital</link:label>
    <link:loc xlink:href="sgu-20200630.xsd#sgu_PartnersCapitalProjectedDistributionAmountOnAnnualizedBasisPerShare" xlink:type="locator" xlink:label="sgu_PartnersCapitalProjectedDistributionAmountOnAnnualizedBasisPerShare" />
    <link:label xml:lang="en-US" xlink:label="sgu_PartnersCapitalProjectedDistributionAmountOnAnnualizedBasisPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Partners capital projected distribution amount on annualized basis per share.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_PartnersCapitalProjectedDistributionAmountOnAnnualizedBasisPerShare" xlink:to="sgu_PartnersCapitalProjectedDistributionAmountOnAnnualizedBasisPerShare_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_MinimumDividendDistributionPerUnit" xlink:type="locator" xlink:label="sgu_MinimumDividendDistributionPerUnit" />
    <link:label xml:lang="en-US" xlink:label="sgu_MinimumDividendDistributionPerUnit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum dividend distribution per unit.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_MinimumDividendDistributionPerUnit" xlink:to="sgu_MinimumDividendDistributionPerUnit_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_IncentiveDistributionToGeneralPartner" xlink:type="locator" xlink:label="sgu_IncentiveDistributionToGeneralPartner" />
    <link:label xml:lang="en-US" xlink:label="sgu_IncentiveDistributionToGeneralPartner_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive distribution to the general partner.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_IncentiveDistributionToGeneralPartner" xlink:to="sgu_IncentiveDistributionToGeneralPartner_lbl" />
    <link:loc xlink:href="sgu-20200630.xsd#sgu_IncentiveDistributionsToManagement" xlink:type="locator" xlink:label="sgu_IncentiveDistributionsToManagement" />
    <link:label xml:lang="en-US" xlink:label="sgu_IncentiveDistributionsToManagement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive distributions to management.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="sgu_IncentiveDistributionsToManagement" xlink:to="sgu_IncentiveDistributionsToManagement_lbl" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PartnersCapitalDistributionAmountPerShare" xlink:type="locator" xlink:label="us-gaap_PartnersCapitalDistributionAmountPerShare" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PartnersCapitalDistributionAmountPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distribution declared</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalDistributionAmountPerShare" xlink:to="us-gaap_PartnersCapitalDistributionAmountPerShare_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_PartnersCapitalDistributionAmountPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Partners Capital Distribution Amount Per Share</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_PartnersCapitalProjectedDistributionAmountOnAnnualizedBasisPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partners capital projected distribution amount on annualized basis</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_PartnersCapitalProjectedDistributionAmountOnAnnualizedBasisPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Partners Capital Projected Distribution Amount On Annualized Basis Per Share</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_MinimumDividendDistributionPerUnit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum dividend distribution per unit</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_MinimumDividendDistributionPerUnit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Dividend Distribution Per Unit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LimitedPartnersCapitalAccountDistributionAmount" xlink:type="locator" xlink:label="us-gaap_LimitedPartnersCapitalAccountDistributionAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedPartnersCapitalAccountDistributionAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amount to paid to common unit holders</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedPartnersCapitalAccountDistributionAmount" xlink:to="us-gaap_LimitedPartnersCapitalAccountDistributionAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_LimitedPartnersCapitalAccountDistributionAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Limited Partners Capital Account Distribution Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralPartnersCapitalAccountDistributionAmount" xlink:type="locator" xlink:label="us-gaap_GeneralPartnersCapitalAccountDistributionAmount" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GeneralPartnersCapitalAccountDistributionAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amount to paid to the General Partner</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralPartnersCapitalAccountDistributionAmount" xlink:to="us-gaap_GeneralPartnersCapitalAccountDistributionAmount_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_GeneralPartnersCapitalAccountDistributionAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">General Partners Capital Account Distribution Amount</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_IncentiveDistributionToGeneralPartner_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive distribution to the General Partner</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_IncentiveDistributionToGeneralPartner_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Distribution To General Partner</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_IncentiveDistributionsToManagement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incentive distributions to management</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_IncentiveDistributionsToManagement_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Distributions To Management</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendPayableDateToBePaidDayMonthAndYear" xlink:type="locator" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend payable date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendPayableDateToBePaidDayMonthAndYear" xlink:to="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Dividend Payable Date To Be Paid Day Month And Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsPayableDateOfRecordDayMonthAndYear" xlink:type="locator" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend record date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear" xlink:to="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable Date Of Record Day Month And Year</link:label>
    <link:label xml:lang="en-US" xlink:label="sgu_AveragePricePaidPerUnit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Average price paid per unit</link:label>
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