condition mean min max 2 h after light 15.11325 11.3423 21.6289 6 h after light 11.005915 9.17923 13.7493 10 h after light 8.46799 5.98104 10.7734 14 h after light 8.387006666666666 6.28205 10.5915 18 h after light 11.001346666666667 7.39546 12.726 2 h after dark 10.501835 8.26227 12.2653