condition mean min max 4 h after light 1827.9 1827.9 1827.9 8 h after light 1766.65 1626.3 1907.0 12 h after light 1618.35 1537.9 1698.8 4 h after dark 2039.85 1362.0 2717.7 8 h after dark 2116.6499999999996 2075.1 2158.2 12 h after dark 1767.4 1651.1 1883.7