condition mean min max Sterile Leaflet 3.4837 0.0 7.36485 Fertile Leaflet with Sori 0.9989673333333334 0.0 2.25362 Primary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0