condition mean min max Sterile Frond 1.5156480666666667 0.0 4.48132 Fertile Frond 2.1073313333333332 0.0 6.03796 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0