condition mean min max 4 h after light 592.1 592.1 592.1 8 h after light 580.55 548.1 613.0 12 h after light 724.4000000000001 578.7 870.1 4 h after dark 858.25 833.8 882.7 8 h after dark 913.3499999999999 886.8 939.9 12 h after dark 793.5 621.5 965.5