condition mean min max Sterile Leaflet 2.34937 0.0 5.20934 Fertile Leaflet with Sori 0.8341066666666667 0.0 2.50232 Primary Rachis 1.5196033333333332 0.0 2.87369 Petiole 0.40882 0.0 1.22646 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0