condition mean min max 4 h after light 1.263795 1.12998 1.39761 8 h after light 1.121115 1.00653 1.2357 12 h after light 2.0702 1.6306 2.5098 4 h after dark 3.51335 2.99748 4.02922 8 h after dark 2.2786999999999997 2.17928 2.37812 12 h after dark 1.8133 1.76698 1.85962