condition mean min max Sterile Leaflet 1.87633 0.0 3.59747 Fertile Leaflet with Sori 13.22918 5.62884 17.2414 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