Thank you, I know that.
My question was e.g.
I start a miner with 50th after a week I see the best share of xxx.
now i want to know if my luck is above average or worse than the probability.
It's a linear relationship, so take the time needed for a block from the solochance site and ratio that with the time you run your miner vs. its best share and see if you're "lucky" during the time you are calculating this.