condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.0 0.0 0.0 Petiole 2.078949 0.253767 4.88363 Crozier 0.718541 0.0 1.65006 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0