condition mean min max 4 h after light 1377.5 1377.5 1377.5 8 h after light 1440.1999999999998 1346.8 1533.6 12 h after light 1322.45 1138.9 1506.0 4 h after dark 1451.95 1328.7 1575.2 8 h after dark 1527.85 1284.5 1771.2 12 h after dark 1308.0 1192.1 1423.9