condition mean min max Sterile Leaflet 1.68004 0.0 3.74365 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 3.1973396666666667 0.630949 7.17764 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