condition mean min max 0 h after light 7.933125 7.59116 8.27509 2 h after light 8.633205 8.56322 8.70319 4 h after light 16.957 15.6033 18.3107 8 h after light 21.1154 16.9946 25.2362 12 h after light 49.2175 46.9546 51.4804 2 h after dark 39.5218 38.9125 40.1311 4 h after dark 17.08165 14.4696 19.6937 8 h after dark 9.448755 8.9337 9.96381 12 h after dark 6.0131250000000005 5.79567 6.23058