condition mean min max 4 h after light 592.9192175000001 587.032071 598.806364 8 h after light 606.9949705 596.645024 617.344917 12 h after light 706.8388594999999 641.948777 771.728942 4 h after dark 644.482057 580.232057 708.732057 8 h after dark 699.2733745 595.102931 803.443818 12 h after dark 785.231575 785.231575 785.231575