condition mean min max 4 h after light 1.6 1.6 1.6 8 h after light 19.2 6.9 31.5 12 h after light 28.1 16.3 39.9 4 h after dark 11.899999999999999 3.4 20.4 8 h after dark 3.5 1.9 5.1 12 h after dark 8.1 4.8 11.4