condition mean min max 4 h after light 2.6459799999999998 2.1811 3.11086 8 h after light 3.2301349999999998 3.03825 3.42202 12 h after light 3.530995 3.11445 3.94754 4 h after dark 4.26551 3.3134 4.94671 8 h after dark 4.804 4.69864 4.99184 12 h after dark 3.9609199999999998 3.79106 4.2056