condition mean min max 4 h after light 1869.2268515 1552.703347 2185.750356 8 h after light 1470.6186360000002 1361.431026 1579.806246 12 h after light 1716.1783730000002 1631.020739 1801.336007 4 h after dark 1371.426378 1083.568464 1659.284292 8 h after dark 1240.340134 960.384932 1520.295336 12 h after dark 1746.384659 1746.384659 1746.384659