condition mean min max 4 h after light 932.5 932.5 932.5 8 h after light 1075.7 1015.6 1135.8 12 h after light 1200.65 1139.7 1261.6 4 h after dark 1507.8 1360.0 1655.6 8 h after dark 1692.7 1487.2 1898.2 12 h after dark 1663.15 1513.8 1812.5