condition mean min max Sterile Frond 2.334451666666667 0.0 6.57512 Fertile Frond 0.25611866666666666 0.0 0.768356 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