condition mean min max Sterile Frond 7.42315 0.0 17.5981 Fertile Frond 0.9240183333333334 0.0 2.08156 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0