condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.08401633333333335 0.0 0.252049 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 6.441 0.0 19.323 Root 0.15697233333333332 0.0 0.470917