condition mean min max 4 h after light 5152.7 5152.7 5152.7 8 h after light 4946.45 4526.7 5366.2 12 h after light 2468.7 614.7 4322.7 4 h after dark 554.2 500.3 608.1 8 h after dark 544.05 543.5 544.6 12 h after dark 752.6 613.6 891.6