condition mean min max 4 h after light 2218.180151 2157.385944 2278.974358 8 h after light 1898.54287 1880.971317 1916.114423 12 h after light 2336.8179710000004 2250.232057 2423.403885 4 h after dark 2665.9007305 2579.074967 2752.726494 8 h after dark 2332.8661279999997 2155.611681 2510.120575 12 h after dark 3206.791409 3206.791409 3206.791409