condition mean min max 4 h after light 18.0 18.0 18.0 8 h after light 5.2 3.9 6.5 12 h after light 47.400000000000006 31.1 63.7 4 h after dark 23.95 9.5 38.4 8 h after dark 41.85 38.1 45.6 12 h after dark 30.0 27.0 33.0