condition mean min max 4 h after light 1572.0 1572.0 1572.0 8 h after light 1712.85 1658.6 1767.1 12 h after light 1678.35 1483.8 1872.9 4 h after dark 1618.0 1481.5 1754.5 8 h after dark 1421.0500000000002 1340.9 1501.2 12 h after dark 1270.75 1258.7 1282.8