condition mean min max 4 h after light 5.0 5.0 5.0 8 h after light 8.75 7.4 10.1 12 h after light 18.8 5.5 32.1 4 h after dark 16.85 2.9 30.8 8 h after dark 5.3 2.4 8.2 12 h after dark 37.650000000000006 27.6 47.7