condition mean min max Sterile Frond 0.5003266666666667 0.0 1.50098 Fertile Frond 4.013663333333334 0.0 9.77268 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.34410999999999997 0.0 1.03233 Root 0.323653 0.0 0.970959