condition mean min max Sterile Frond 9.6006 5.7669 12.938 Fertile Frond 12.83047 8.63141 19.4887 Young Stem with Root 14.8098 12.1676 19.6769 Mature Stem with Root 16.2893 12.6828 22.8424 Root 8.36116 5.54147 13.5068