condition mean min max 4 h after light 20.9 20.9 20.9 8 h after light 15.450000000000001 3.1 27.8 12 h after light 15.700000000000001 2.3 29.1 4 h after dark 9.25 2.7 15.8 8 h after dark 19.85 12.9 26.8 12 h after dark 14.0 9.3 18.7