condition mean min max Sterile Frond 5.977433333333334 0.0 17.9323 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.05635066666666667 0.0 0.169052 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0