condition mean min max 4 h after light 8.858997500000001 8.2963 9.421695 8 h after light 9.968615 9.192432 10.744798 12 h after light 9.321119 8.181649 10.460589 4 h after dark 10.129829 9.633444 10.626214 8 h after dark 9.633444 9.633444 9.633444 12 h after dark 10.538543 10.538543 10.538543