condition mean min max 4 h after light 160.9 160.9 160.9 8 h after light 211.25 204.0 218.5 12 h after light 186.7 186.6 186.8 4 h after dark 204.8 155.5 254.1 8 h after dark 137.9 135.5 140.3 12 h after dark 152.3 129.9 174.7