condition mean min max 4 h after light 89.3 89.3 89.3 8 h after light 79.7 61.1 98.3 12 h after light 105.85 98.1 113.6 4 h after dark 82.65 44.7 120.6 8 h after dark 109.05 101.0 117.1 12 h after dark 70.65 69.7 71.6