condition mean min max Sterile Frond 5.2168 0.0 15.6504 Fertile Frond 1.6466566666666667 0.0 4.93997 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 1.7847393333333335 0.0 4.8055 Root 0.0 0.0 0.0