condition mean min max 4 h after light 6.1 6.1 6.1 8 h after light 7.699999999999999 4.7 10.7 12 h after light 8.25 6.1 10.4 4 h after dark 3.9000000000000004 0.9 6.9 8 h after dark 4.4 4.3 4.5 12 h after dark 5.15 5.0 5.3