condition mean min max 4 h after light 29.2 29.2 29.2 8 h after light 39.05 34.1 44.0 12 h after light 25.95 8.9 43.0 4 h after dark 18.3 5.6 31.0 8 h after dark 2.55 2.0 3.1 12 h after dark 11.9 4.7 19.1