condition mean min max 4 h after light 14.233915 7.14953 21.3183 8 h after light 13.4793 10.791 16.1676 12 h after light 24.7115 22.072 27.351 4 h after dark 23.2531 18.4161 27.7651 8 h after dark 17.7162 17.3498 18.4249 12 h after dark 10.33648 5.47054 14.9777