condition mean min max Sterile Leaflet 0.4640144666666667 0.0466034 1.04565 Fertile Leaflet with Sori 4.361536666666667 3.13914 6.29206 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.5232662 0.0479266 0.802267 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0