condition mean min max 4 h after light 3.7 3.7 3.7 8 h after light 3.0999999999999996 1.9 4.3 12 h after light 3.2 2.8 3.6 4 h after dark 4.95 2.6 7.3 8 h after dark 16.95 4.6 29.3 12 h after dark 3.6 2.5 4.7