condition mean min max 4 h after light 6.0 6.0 6.0 8 h after light 10.049999999999999 2.7 17.4 12 h after light 16.05 10.9 21.2 4 h after dark 1.7 1.5 1.9 8 h after dark 10.600000000000001 1.6 19.6 12 h after dark 3.2 3.1 3.3