condition mean min max Sterile Frond 9.019412333333333 0.0 26.8225 Fertile Frond 1.4866633333333334 0.0 4.45999 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