condition mean min max 4 h after light 2.4 2.4 2.4 8 h after light 6.300000000000001 3.7 8.9 12 h after light 6.95 5.5 8.4 4 h after dark 17.8 5.1 30.5 8 h after dark 7.75 7.6 7.9 12 h after dark 6.75 6.7 6.8