condition mean min max 4 h after light 1.5 1.5 1.5 8 h after light 5.2 4.9 5.5 12 h after light 7.8500000000000005 1.4 14.3 4 h after dark 5.9 1.3 10.5 8 h after dark 4.550000000000001 4.4 4.7 12 h after dark 9.100000000000001 2.1 16.1