condition mean min max Sterile Leaflet 4.541986 0.0 13.43 Fertile Leaflet with Sori 0.22582 0.0 0.67746 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