condition mean min max 4 h after light 1592.9 1592.9 1592.9 8 h after light 1404.55 1350.8 1458.3 12 h after light 1350.85 1334.8 1366.9 4 h after dark 1413.55 1409.6 1417.5 8 h after dark 1503.4 1416.4 1590.4 12 h after dark 1805.9 1502.9 2108.9