condition mean min max Sterile Leaflet 2.17319 0.0 6.51957 Fertile Leaflet with Sori 0.365878 0.218141 0.654121 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