condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.20295633333333332 0.0 0.487303 Mature Stem with Root 0.0 0.0 0.0 Root 6.5517666666666665 0.0 19.6553