condition mean min max Sterile Leaflet 0.8160333333333334 0.0 2.4481 Fertile Leaflet with Sori 2.6911400000000003 0.0 8.07342 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