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 21.0517 0.0 63.1551 Root 0.22104566666666667 0.0 0.386337