condition mean min max 2 h after light 20.197566666666667 17.2658 24.1227 6 h after light 13.160235 9.17301 16.7544 10 h after light 15.165405 9.80403 21.9275 14 h after light 16.560616666666668 10.5347 22.27 18 h after light 15.1927 12.3652 20.4932 2 h after dark 18.17465 15.3239 22.9999