condition mean min max 4 h after light 10.6 10.6 10.6 8 h after light 15.05 12.8 17.3 12 h after light 6.300000000000001 4.3 8.3 4 h after dark 7.55 5.4 9.7 8 h after dark 9.05 8.4 9.7 12 h after dark 28.400000000000002 7.2 49.6