condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 1.92434 0.0 5.77302 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.03416 0.0 3.10248 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0