condition mean min max Sterile Leaflet 3.864152 0.324216 9.01478 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 0.016138333333333334 0.0 0.048415 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0