condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 22.339566666666666 0.0 37.884 Root 54.677550000000004 2.36165 137.346