condition mean min max 4 h after light 106.1 106.1 106.1 8 h after light 114.2 113.0 115.4 12 h after light 130.05 116.6 143.5 4 h after dark 101.95 66.4 137.5 8 h after dark 61.75 44.6 78.9 12 h after dark 77.5 65.9 89.1