condition mean min max 4 h after light 22.7 22.7 22.7 8 h after light 14.25 10.5 18.0 12 h after light 10.75 5.1 16.4 4 h after dark 34.2 27.7 40.7 8 h after dark 34.5 27.5 41.5 12 h after dark 21.7 17.7 25.7