condition mean min max 4 h after light 1.3 1.3 1.3 8 h after light 3.1500000000000004 2.1 4.2 12 h after light 5.75 3.8 7.7 4 h after dark 12.25 5.4 19.1 8 h after dark 4.85 2.5 7.2 12 h after dark 6.3 4.0 8.6