condition mean min max Sterile Leaflet 0.310604 0.0 0.931812 Fertile Leaflet with Sori 4.478023666666666 0.644551 6.72404 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.19128733333333334 0.0 0.573862 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0