condition mean min max 4 h after light 1544.8 1544.8 1544.8 8 h after light 1555.0500000000002 1317.9 1792.2 12 h after light 1516.8 1476.0 1557.6 4 h after dark 1402.85 1389.2 1416.5 8 h after dark 1366.35 1193.1 1539.6 12 h after dark 1488.2 1413.5 1562.9