condition mean min max Sterile Leaflet 6.742393333333333 0.0 13.776 Fertile Leaflet with Sori 0.0 0.0 0.0 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 0.15813933333333333 0.0 0.474418