condition mean min max 4 h after light 1.5024725 0.856905 2.14804 8 h after light 1.30599 1.22345 1.38853 12 h after light 1.89795 1.42807 2.36783 4 h after dark 3.4901649999999997 2.61163 4.3687 8 h after dark 1.37222 1.3175 1.42694 12 h after dark 1.090714 0.885228 1.2962