Basic per share data is computed by dividing net income or loss applicable to common stockholders by the weighted average number of common shares outstanding during the period. Diluted per share data is computed by dividing net income or loss applicable to common stockholders by the weighted average number of common shares outstanding during the period increased to include, if dilutive, the number of additional common shares that would have been outstanding as calculated using the treasury stock method. Potential common shares were related to outstanding but unexercised options, multiple series of convertible preferred stock, and warrants for all periods presented.

The following were excluded from the diluted loss per share calculation for the three and six months periods presented because their effect would be anti-dilutive:



	June 30, 2023		June 30, 2022
Outstanding stock options		128,582		78,925
Outstanding warrants		142,733		142,746
Preferred stock		28,190		28,191
Total		299,506		249,862