condition mean min max Sterile Leaflet 0.063329 0.0 0.189987 Fertile Leaflet with Sori 2.66376 0.0 5.18385 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