condition mean min max 0 h after light 874.3635 863.397 885.33 4 h after light 819.2915 815.665 822.918 8 h after light 605.126 598.069 612.183 4 h after dark 346.7315 315.947 377.516 8 h after dark 675.3530000000001 663.559 687.147 12 h after dark 935.384 925.602 945.166