condition mean min max 3 h after light 11.981266666666667 11.2345 12.4375 6 h after light 13.9288 12.8959 14.6491 9 h after light 14.6638 12.1487 17.4832 12 h after light 18.679949999999998 16.3629 20.6809 3 h after dark 26.9318 26.231 27.6696 6 h after dark 24.8853 22.9741 25.9733 9 h after dark 21.9907 19.6649 23.8903 12 h after dark 19.079 18.208 19.95