condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.7781666666666666 0.0 2.3345 Mature Stem with Root 0.089458 0.0 0.268374 Root 4.355587 0.0 12.4217