19.6" on the season. We make fun of the sun angle, not to mention folks totally miscalculating it. I swear some think we have a July 4th angle by St Paddy's Day but I digress. I'm not shoveling that sleet off my unfrozen rock driveway, no way. I broke it up a but near where we walk so the shale is exposed and can absorb more of the sunlight to help it all melt. If this were December I'd be much more concerned about the potentially long term mess I'd have out there.