condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.140399 0.0 0.311871 Young Stem with Root 0.13205466666666668 0.0 0.396164 Mature Stem with Root 8.0915 0.0 24.2745 Root 0.5334 0.0 1.6002