condition mean min max Sterile Leaflet 0.148866 0.0 0.446598 Fertile Leaflet with Sori 0.5407006666666667 0.0 1.21482 Primary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.10480033333333333 0.0 0.314401 Root 2.27321 0.0 5.12678