condition mean min max 4 h after light 2.6 2.6 2.6 8 h after light 11.95 7.2 16.7 12 h after light 10.35 8.7 12.0 4 h after dark 10.5 8.9 12.1 8 h after dark 33.45 10.0 56.9 12 h after dark 25.549999999999997 21.4 29.7