condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 4.47279 0.0 11.8622 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.017153066666666664 0.0 0.0514592 Root 0.0 0.0 0.0