condition mean min max 4 h after light 1495.4 1495.4 1495.4 8 h after light 1675.0 1386.9 1963.1 12 h after light 1758.05 1716.5 1799.6 4 h after dark 1628.25 1365.7 1890.8 8 h after dark 1479.3000000000002 1371.4 1587.2 12 h after dark 1610.15 1560.1 1660.2