condition mean min max Sterile Leaflet 2.1463266666666665 0.0 6.43898 Fertile Leaflet with Sori 0.145308 0.0 0.435924 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