condition mean min max 4 h after light 272.9674625 266.835381 279.099544 8 h after light 217.6490515 179.385903 255.9122 12 h after light 248.948723 207.160547 290.736899 4 h after dark 183.806628 174.539775 193.073481 8 h after dark 134.98512449999998 120.725389 149.24486 12 h after dark 374.847441 374.847441 374.847441