condition mean min max 4 h after light 63.3 63.3 63.3 8 h after light 90.95 75.7 106.2 12 h after light 69.15 66.1 72.2 4 h after dark 82.7 34.4 131.0 8 h after dark 68.0 37.9 98.1 12 h after dark 91.25 67.0 115.5