condition mean min max 4 h after light 14.7 14.7 14.7 8 h after light 4.9 2.2 7.6 12 h after light 6.85 2.0 11.7 4 h after dark 9.899999999999999 1.9 17.9 8 h after dark 9.8 6.7 12.9 12 h after dark 2.9 1.2 4.6