condition mean min max Sterile Leaflet 2.6210633333333333 0.0 5.98317 Fertile Leaflet with Sori 0.47058 0.0 1.41174 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