Solo mining hashrate check !

[sweeppicking]

Hi all, i've got 7 7970 and 12 5830 cards, i mine Worldcoin/Litecoin usually, but sometimes i mine new altcoins in solo mode for win some profit, my question is, How can i check the hash than i'm sending to the network?


Litecoin solo mining calculator says (example) 10 minutes too found a block, but when i mine, use to need like 20 or 30 minutes to find one.

[iGotSpots]

http://en.wikipedia.org/wiki/Law_of_averages