condition mean min max 3 h after light 11.690516666666667 9.54915 13.8283 6 h after light 15.946266666666666 13.5331 18.838 9 h after light 21.7367 18.8559 27.0099 12 h after light 36.67945 26.663 44.1588 3 h after dark 117.07466666666667 101.868 129.971 6 h after dark 141.751 126.757 153.493 9 h after dark 130.185 119.207 141.126 12 h after dark 59.63055 58.7721 60.489