condition mean min max Sterile Leaflet 0.13877846666666666 0.0 0.321661 Fertile Leaflet with Sori 2.43195 1.33142 4.36666 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