condition mean min max 4 h after light 14.606099 14.085217 15.126981 8 h after light 13.108414499999999 12.851966 13.364863 12 h after light 16.1791135 14.397968 17.960259 4 h after dark 15.434442 15.126981 15.741903 8 h after dark 18.1740725 17.734926 18.613219 12 h after dark 16.692517 16.692517 16.692517