How many coins can I mine with PoA?

0.5 coins per audited PoS block and there can be between 59 and 65 PoS blocks audited by the PoA miner (roughly once an hour) which means each rewards can be between 29.5 and 32.5 coins.

After the hard fork, it will be 0.25 per audited PoS block which means each rewards can be between 14.75 and 16.25 coins.