condition mean min max Sterile Leaflet 0.26740166666666665 0.0 0.557847 Fertile Leaflet with Sori 12.37783 0.13775 36.369 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.23792266666666664 0.0 0.713768 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0