condition mean min max Sterile Leaflet 3.4499999999999997 0.0 10.35 Fertile Leaflet with Sori 0.198824 0.0 0.596472 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.043716 0.0 0.131148 Root 0.0 0.0 0.0