condition mean min max 4 h after light 1.4 1.4 1.4 8 h after light 17.85 1.1 34.6 12 h after light 7.95 6.1 9.8 4 h after dark 22.35 11.1 33.6 8 h after dark 3.9499999999999997 3.3 4.6 12 h after dark 20.9 8.3 33.5