condition mean min max Sterile Leaflet 3.5037323333333337 0.912167 6.49352 Fertile Leaflet with Sori 0.516643 0.0 0.963569 Petiole 0.11101233333333334 0.0 0.333037 Crozier 0.117189 0.0 0.351567 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0