condition mean min max 4 h after light 1984.1 1984.1 1984.1 8 h after light 2428.6 2154.6 2702.6 12 h after light 2039.25 1695.3 2383.2 4 h after dark 1693.7 1465.5 1921.9 8 h after dark 1902.4 1786.7 2018.1 12 h after dark 1762.4 1655.2 1869.6