condition mean min max 4 h after light 15.1 15.1 15.1 8 h after light 21.7 12.2 31.2 12 h after light 24.0 12.0 36.0 4 h after dark 12.6 8.2 17.0 8 h after dark 29.85 29.7 30.0 12 h after dark 18.0 4.3 31.7