condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 3.0873833333333334 0.0 9.26215 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.6195733333333333 0.0 1.85872 Root 0.0 0.0 0.0