Mate, in spite of what people may think I'm no dumb-******** but I can't make much of the spread sheet you sent. I've got a keen interest in statistics and I'm pretty sure the spreadsheet would be very useful if I could make head or tail of your explanation. Even putting figures in there hasn't helped. What exactly do the percentages refer to, what figure is the points?
Number of observations I think I've got nailed :-)

KV