condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.136607 0.0 0.409821 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.9941733333333334 0.0 5.60288 Root 4.066393333333333 2.22577 6.37303