condition mean min max 4 h after light 1775.9 1775.9 1775.9 8 h after light 1970.45 1935.9 2005.0 12 h after light 1895.1 1730.3 2059.9 4 h after dark 1605.25 1583.8 1626.7 8 h after dark 1393.05 1382.6 1403.5 12 h after dark 1522.5500000000002 1468.9 1576.2