condition mean min max Sterile Leaflet 2.598386666666667 0.0 4.53045 Fertile Leaflet with Sori 0.0303432 0.0 0.0910296 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