condition mean min max Sterile Leaflet 0.65024 0.0 1.95072 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 1.903632 0.0 5.35097 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