condition mean min max 4 h after light 12.7 12.7 12.7 8 h after light 18.15 5.5 30.8 12 h after light 3.9000000000000004 3.6 4.2 4 h after dark 18.25 3.2 33.3 8 h after dark 9.2 7.9 10.5 12 h after dark 19.950000000000003 17.8 22.1