condition mean min max Sterile Frond 2.300406666666667 0.0 6.90122 Fertile Frond 0.92514 0.0 2.77542 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.12080999999999999 0.0 0.36243 Root 0.0 0.0 0.0