condition mean min max 4 h after light 1483.4 1483.4 1483.4 8 h after light 1564.6 1485.9 1643.3 12 h after light 1320.45 1294.4 1346.5 4 h after dark 1729.05 1318.0 2140.1 8 h after dark 1819.85 1765.0 1874.7 12 h after dark 1685.95 1612.0 1759.9