condition mean min max Sterile Leaflet 4.920743333333333 1.97548 9.41413 Fertile Leaflet with Sori 3.168383 0.567859 5.37064 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.56547 0.0 1.69641 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0