condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.022969733333333336 0.0 0.0689092 Rhizome 0.011229333333333334 0.0 0.033688 Root 2.537598 0.0 7.26528