condition mean min max 0 h after light 6.530975 6.47623 6.58572 4 h after light 5.9487950000000005 5.78353 6.11406 8 h after light 2.9902550000000003 2.84941 3.1311 4 h after dark 4.89527 3.55336 6.23718 8 h after dark 6.7047349999999994 6.63101 6.77846 12 h after dark 7.13601 6.20609 8.06593