condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.6730953333333334 0.0 1.63245 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.416853333333333 0.0 4.06096 Root 4.84213 0.0 13.508