You have like 12-18 otg and about to get at least 6 more. Yet you’re neurotic about whether the ratios mean 9” or 6”. Sit back and relax. I wish I had your problem.
But then I get mad when the cover melts and it’s just piles left. Makes me think there should be snow.
That’s why I never shovel or just use the blower when there’s enough. Can spread it around the sun torched areas and it makes it look more like pack.