condition mean min max 0 h after light 1.1378080000000002 0.876196 1.39942 4 h after light 1.7766084999999998 0.344937 3.20828 8 h after light 1.671615 1.38451 1.95872 4 h after dark 1.550956 0.687202 2.41471 8 h after dark 1.81549 1.5636 2.06738 12 h after dark 1.382315 1.36709 1.39754