condition mean min max 4 h after light 12.563029 11.460729 13.665329 8 h after light 13.5250205 13.28189 13.768151 12 h after light 11.757288500000001 11.45016 12.064417 4 h after dark 15.315726 13.768151 16.863301 8 h after dark 15.5574995 15.51839 15.596609 12 h after dark 13.403509 13.403509 13.403509