You know you Googled it 
1-7…thanks for the clarification. And I don’t inspect per se…glance at is more like it…
So I’m guessing that numbers 3 and 4 are the “ideal” type of stool? Although that chart doesn’t seem to cover the entire range, it seems. For #1, it mentions “hard to pass,” but I’ve had #1 plenty of times that were not hard to pass at all…easy as #3 or #4s, but just not all mushed together for some reason.
Maybe I’m part rabbit? 