condition mean min max 4 h after light 2.9 2.9 2.9 8 h after light 7.45 1.8 13.1 12 h after light 35.05 34.5 35.6 4 h after dark 3.5 1.2 5.8 8 h after dark 2.6999999999999997 1.3 4.1 12 h after dark 2.35 2.2 2.5