Thanks for looking into it.
Are you sure that all found blocks were paid?
I mean (pseudo-code), does #FoundBlocks * Reward = Sum(PaidToUser) for all users?
Yes, that is fine.
Ok, thanks.
I am now looking at the average statistics - there are some miners who were paid on average more than 200k coins per found block and some were paid less than 50k coins per found block (you were one of the least (most) lucky miners as you were paid on average 20k per found block). Whether you will be in the group of most/least lucky miners is a matter of luck and that is why pool mining is smoothing these differences.
Wait a minute, how can anyone earn more than double the block reward per block on average? At most they should be able to earn the entire block reward on average, not an average of two times the total block reward. Is this per found block per user or total across the pool?
That could happen if a miner is very unlucky on the pool and barely finds blocks, but his shares will get paid nonetheless.
In a way, we are the ones paying his shares.
Being lucky on a pool <> being lucky mining solo.