condition mean min max 4 h after light 4.0 4.0 4.0 8 h after light 4.4 2.0 6.8 12 h after light 17.55 6.7 28.4 4 h after dark 13.850000000000001 2.6 25.1 8 h after dark 3.65 2.0 5.3 12 h after dark 11.95 5.1 18.8