condition mean min max 4 h after light 23.6 23.6 23.6 8 h after light 10.95 4.1 17.8 12 h after light 14.95 6.4 23.5 4 h after dark 21.55 6.5 36.6 8 h after dark 30.8 19.5 42.1 12 h after dark 13.4 10.8 16.0