condition mean min max Sterile Leaflet 2.91813 0.0 5.31261 Fertile Leaflet with Sori 0.14330266666666666 0.0 0.429908 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