condition mean min max Sterile Leaflet 3.4648203333333334 0.290801 8.2798 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.030765200000000003 0.0 0.0922956 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0