condition mean min max Sterile Leaflet 2.1765833333333333 1.36589 2.71762 Fertile Leaflet with Sori 2.994703 0.149079 5.80295 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.5529486666666668 0.127046 2.42541 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0