condition mean min max Sterile Leaflet 2.763393333333333 1.22435 5.53696 Fertile Leaflet with Sori 0.6167199999999999 0.0 1.74253 Primary Rachis 0.068791 0.0 0.106832 Secondary Rachis 1.26274 0.0 3.78822 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0