condition mean min max 4 h after light 1535.4 1535.4 1535.4 8 h after light 1497.9 1305.0 1690.8 12 h after light 1636.05 1311.8 1960.3 4 h after dark 1471.15 1455.9 1486.4 8 h after dark 1460.4499999999998 1290.3 1630.6 12 h after dark 1475.6999999999998 1389.1 1562.3