condition mean min max Sterile Leaflet 0.2846186666666667 0.0 0.64913 Fertile Leaflet with Sori 2.4545766666666666 0.0 7.10167 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.149207 0.0 0.447621 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0