condition mean min max 4 h after light 8.04947 7.82108 8.27786 8 h after light 7.899800000000001 7.15134 8.64826 12 h after light 7.818155000000001 7.38135 8.25496 4 h after dark 6.37181 5.94713 6.79649 8 h after dark 8.573115 8.47443 8.6718 12 h after dark 9.42365 8.8039 10.0434