condition mean min max 4 h after light 1830.8 1830.8 1830.8 8 h after light 1951.5 1895.8 2007.2 12 h after light 1684.05 1547.6 1820.5 4 h after dark 2009.0500000000002 1722.8 2295.3 8 h after dark 2084.25 1936.7 2231.8 12 h after dark 1896.55 1836.0 1957.1