condition mean min max Sterile Leaflet 0.08632666666666666 0.0 0.25898 Fertile Leaflet with Sori 3.5551333333333335 0.0 10.6654 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