condition mean min max 4 h after light 45.2 45.2 45.2 8 h after light 60.25 50.5 70.0 12 h after light 79.85 36.7 123.0 4 h after dark 110.9 89.5 132.3 8 h after dark 71.4 21.9 120.9 12 h after dark 125.05 95.1 155.0