condition mean min max Sterile Leaflet 13.5421 0.0 40.6263 Fertile Leaflet with Sori 6.926756666666666 0.0 19.0737 Primary Rachis 4.524127333333333 0.0 13.2295 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