condition mean min max Sterile Leaflet 0.040257 0.0 0.120771 Fertile Leaflet with Sori 2.245552 0.506796 3.5641 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.06249166666666667 0.0 0.187475 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0