condition mean min max Sterile Leaflet 3.2752933333333334 0.0 9.82588 Fertile Leaflet with Sori 0.137258 0.0 0.278562 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 0.0 0.0 0.0