ASA

2:1 for up to the first 12 hours of duty, 1:1 for any duty beyond the initial 12 hours. (Example, 12:00 is 6:00 of credit, 13:30min duty is 7:30 of credit). Minimum day credit is 3:45, and minimum ready reserve credit is 4:00.

100% DH pay

As well as a Reserve Day Credit, if as a reserve pilot you block more than 75 hours in a month, any days where you were available and the company did not call you you are paid 3:45 of credit for that day. For example, you fly 80 hours of block as a reserve pilot. 4 days you were available and they did not call you, thats 4 x 3:45 = 15 additional hours of pay credit.