condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.048439333333333334 0.0 0.145318 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.08861633333333334 0.0 0.265849 Root 4.1588 0.0 12.4764