[Ryno]

Once I define the test period as 1000 hours on the drawdown studies, all of the unit questions are taken care of. If I used per hand, per 100, etc., I would get the same answer. The reason I don't like "per hand" is that the distribution of returns hand-to-hand are very non-normal. Granted, over 1000 hours I'm way into Large Numbers and it won't matter, but sometimes I do small sample size tests.