condition mean min max 4 h after light 5.2 5.2 5.2 8 h after light 18.950000000000003 3.2 34.7 12 h after light 17.299999999999997 12.2 22.4 4 h after dark 13.0 5.5 20.5 8 h after dark 11.85 2.0 21.7 12 h after dark 4.5 3.5 5.5