condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.2898266666666667 0.0 0.86948 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.59547 0.0 7.78641 Root 1.39264 0.0 3.39068