condition mean min max Sterile Leaflet 0.1871533333333333 0.0 0.56146 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 2.0494733333333333 0.0 6.14842 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0