condition mean min max Sterile Leaflet 0.06494 0.0 0.19482 Fertile Leaflet with Sori 1.69377 0.0 5.08131 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.80966 0.0 2.42898 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0