condition mean min max Sterile Leaflet 0.1718293333333333 0.0 0.515488 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 4.5731 0.0 13.7193 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0