condition mean min max Sterile Leaflet 1.039074 0.841531 1.43032 Fertile Leaflet with Sori 3.655863333333333 0.0 5.69391 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0