condition mean min max 4 h after light 1533.4 1533.4 1533.4 8 h after light 1604.65 1280.1 1929.2 12 h after light 1841.6 1829.2 1854.0 4 h after dark 1811.4 1453.9 2168.9 8 h after dark 1767.9 1493.1 2042.7 12 h after dark 1355.85 1290.5 1421.2