condition mean min max Sterile Leaflet 0.06954966666666666 0.0 0.208649 Fertile Leaflet with Sori 12.138386666666667 8.50656 16.29 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