condition mean min max Sterile Leaflet 0.31473833333333334 0.0 0.664876 Fertile Leaflet with Sori 1.948601 0.231943 4.67537 Primary Rachis 0.012681 0.0 0.038043 Secondary Rachis 5.880299 0.177467 16.944 Petiole 0.052491166666666665 0.0 0.135018 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0