condition mean min max 4 h after light 169.4 169.4 169.4 8 h after light 135.95 111.8 160.1 12 h after light 155.1 124.7 185.5 4 h after dark 137.45 106.7 168.2 8 h after dark 166.1 110.2 222.0 12 h after dark 174.2 105.8 242.6