condition mean min max Sterile Leaflet 0.5327856666666666 0.0 1.30948 Fertile Leaflet with Sori 5.090836666666667 4.19322 6.61671 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