condition mean min max 4 h after light 11.2 11.2 11.2 8 h after light 15.55 12.0 19.1 12 h after light 14.45 12.4 16.5 4 h after dark 8.95 5.0 12.9 8 h after dark 22.799999999999997 19.9 25.7 12 h after dark 16.0 15.5 16.5