condition mean min max 4 h after light 1.9 1.9 1.9 8 h after light 3.3499999999999996 2.1 4.6 12 h after light 4.4 2.9 5.9 4 h after dark 19.95 2.6 37.3 8 h after dark 3.45 1.9 5.0 12 h after dark 2.3 1.2 3.4