I had NEVER seen luck fluctuating above 100% over 30 or 90 days. Have you seen it?
If it is pure statistics, this should be symmetrical, isn't it?
That's an interesting point. I'm curious if there's a mathematical explanation for that.
M
There is a downward bias due to orphan blocks. Long-term average should be around 97%-98%. Remember, the longer the period, the more the luck converges to the "true" number. It would have to be pretty extreme good luck to hit 100%+ for 30 or 90 days.
Also I think the number of blocks found per time is bionomially distributed, which I don't think is a symmetrical curve. But maybe that is accounted for so that the luck figure is still symmetrical.