condition mean min max 4 h after light 12.7 12.7 12.7 8 h after light 11.75 4.1 19.4 12 h after light 10.0 2.7 17.3 4 h after dark 3.45 2.5 4.4 8 h after dark 26.45 11.1 41.8 12 h after dark 4.7 3.9 5.5