condition mean min max Sterile Leaflet 4.275383 0.340469 12.1244 Fertile Leaflet with Sori 0.16611233333333333 0.0 0.332173 Primary Rachis 0.0 0.0 0.0 Petiole 0.08980266666666666 0.0 0.269408 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0