condition mean min max Sterile Leaflet 3.3552733333333333 0.0 8.88433 Fertile Leaflet with Sori 0.092109 0.0 0.276327 Primary Rachis 0.2911323333333333 0.0 0.645723 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