condition mean min max 4 h after light 79.7 79.7 79.7 8 h after light 72.65 67.8 77.5 12 h after light 69.9 69.8 70.0 4 h after dark 82.35 75.8 88.9 8 h after dark 72.95 42.2 103.7 12 h after dark 80.0 47.7 112.3