condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.09687866666666667 0.0 0.290636 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.1218363333333334 0.0 5.71576 Root 0.0 0.0 0.0