condition mean min max Sterile Frond 0.34074 0.0 1.02222 Fertile Frond 2.4571666666666667 0.0 7.3715 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