condition mean min max 4 h after light 220.4 220.4 220.4 8 h after light 262.75 239.7 285.8 12 h after light 200.45 167.3 233.6 4 h after dark 143.1 141.7 144.5 8 h after dark 149.45 144.5 154.4 12 h after dark 148.85 112.1 185.6