Last stats from http://monero.crypto-pool.fr/#pool_blocks

16 hours and 21 minutes : 57 blocks, 2 orphans (3.5% orphans)
one block every 17 minutes with about 500-600 khash.

(((16.25*55)/982)/550)*60)*98% = 0.0973 XMR per hour per hash.
23.352 XMR per day with 10 kh/s

Not bad