condition mean min max 4 h after light 146.8929675 140.91046 152.875475 8 h after light 155.382247 137.90259 172.861904 12 h after light 601.897471 301.507563 902.287379 4 h after dark 240.52139 222.244093 258.798687 8 h after dark 499.4899185 394.593934 604.385903 12 h after dark 199.568161 199.568161 199.568161