condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.315096 0.0 0.945288 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 6.596093333333333 1.84976 14.7837 Root 0.37010733333333334 0.0 0.910343