condition mean min max 4 h after light 1482.7 1482.7 1482.7 8 h after light 1342.3 1156.5 1528.1 12 h after light 1353.3 1274.6 1432.0 4 h after dark 1601.65 1489.5 1713.8 8 h after dark 1854.75 1672.0 2037.5 12 h after dark 2010.4 1813.8 2207.0