condition mean min max Sterile Leaflet 1.742599 0.348977 3.83661 Fertile Leaflet with Sori 2.496668333333333 0.837135 4.27849 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.230077 0.357931 2.07261 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0