condition mean min max Sterile Frond 0.16727533333333333 0.0 0.266753 Fertile Frond 3.015597 0.0 8.49468 Young Stem with Root 0.04104033333333333 0.0 0.123121 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0