condition mean min max Sterile Leaflet 2.1638633333333335 0.0 5.18705 Fertile Leaflet with Sori 1.3478833333333335 0.0 4.04365 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