condition mean min max 4 h after light 6.69928 5.58698 7.81158 8 h after light 8.5149 8.48732 8.54248 12 h after light 50.7633 46.1116 55.415 4 h after dark 42.98805 41.4992 44.4769 8 h after dark 48.06075 45.8758 50.2457 12 h after dark 24.5728 24.2226 24.923