condition mean min max Sterile Leaflet 2.175683333333333 0.0 5.30861 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 0.03923733333333333 0.0 0.117712 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0