condition mean min max 4 h after light 5.45918 5.37098 5.54093 8 h after light 5.372076666666667 5.35733 5.39579 12 h after light 5.466616666666667 5.38927 5.53852 4 h after dark 5.18446 5.11142 5.27197 8 h after dark 5.4139800000000005 5.30785 5.60771 12 h after dark 5.344503333333333 5.25681 5.411969999999999