condition mean min max Sterile Leaflet 2.3583666666666665 0.0 7.0751 Fertile Leaflet with Sori 7.5374 0.0 19.5274 Primary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.07572516666666668 0.0 0.18487 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0