condition mean min max Sterile Leaflet 0.245959 0.0 0.737877 Fertile Leaflet with Sori 6.363562666666667 0.0 18.375 Primary Rachis 0.0 0.0 0.0 Petiole 0.073383 0.0 0.220149 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0