@ Lucko

Then it means it could take 70+.
I doubt they get into the next block, because that would brake the score calculation - they enter the database later, but in the exact place and when submitted are triggering recalculation, which explains the jumps up and down for the last few rounds (and unconfirmed rewards), but will never happen for the 'confirmed' ones.

EDIT: Just look at the top for accepted shares "| A:xxx" no need to count them for 1h