As with the other rounds only BTC paid to the payout address is used in the calculation, at the time of payout there was only 0.5 BTC to distribute
Ok, understood. So this is the payout address for the round? https://blockchain.info/address/1Di8AKRyKuyoBNgV1zNjTDJopc4Zv8dZsx
Yes that is the payout address for R24.
How come that the payout address has only 1 incoming transaction on Jan 30 (exactly for 0.5 btc)?
Any calc on the net will show that hashing with ~512Gh/s at current difficulty (2193847870) is making at least 0.11 btc/day in which case it makes up ~1 btc per 9 days (exactly how was shown in your R24 mining summary page).
Having said that, if your payout limit with BTC Guild is set to 0.5, you must've received payouts at least twice during the period - the first on Jan 26-27 and the next one on Jan 31 (if not earlier, for the mentioned difficulty only rose Jan 24th, after 1 day hashing). But in any case it wouldn't be only 1 payout and so quiet late. Is there only 1 worker/payout adress for the whole rig/round?
Nothing personal and no strings attached, I understand how hell busy you're now (esp. with r17/BA turmoil) but just want to understand the payout mechanism and calculations completely, to not bother you with sporadic questions furthermore.