condition mean min max Sterile Leaflet 1.8752436666666668 0.0 4.84879 Fertile Leaflet with Sori 4.418723333333333 2.80668 5.78868 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.0447426666666666 0.0 2.65489 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0