condition mean min max 2 h after light 12.45945 10.0151 15.5299 6 h after light 14.1553 11.3491 19.2787 10 h after light 9.62348 6.53885 14.1636 14 h after light 10.095861666666666 6.67579 15.644 18 h after light 9.744001666666666 8.4445 12.5399 2 h after dark 17.970333333333333 10.3699 23.2336