condition mean min max 4 h after light 1577.2216666666668 1428.353333 1676.005 8 h after light 1246.435 1056.495 1515.5 12 h after light 1085.4844446666666 1013.386667 1187.416667 1.5 h after dark 1417.761111 1287.92 1490.03 5.5 h after dark 1661.6422223333334 1583.793333 1705.606667 9.5 h after dark 1774.0822223333334 1735.806667 1822.083333