condition mean min max Sterile Leaflet 2.0485012 0.0 6.06754 Fertile Leaflet with Sori 0.07728666666666667 0.0 0.23186 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