condition mean min max 4 h after light 5.605005 5.39551 5.8145 8 h after light 6.9405149999999995 6.61112 7.26991 12 h after light 8.082255 7.59641 8.5681 4 h after dark 9.147955 9.01429 9.28162 8 h after dark 7.468475 7.40471 7.53224 12 h after dark 7.7984599999999995 7.10478 8.49214