condition mean min max 4 h after light 3.2 3.2 3.2 8 h after light 21.6 3.5 39.7 12 h after light 5.800000000000001 5.4 6.2 4 h after dark 17.4 15.7 19.1 8 h after dark 13.9 11.0 16.8 12 h after dark 32.85 30.7 35.0