condition mean min max Sterile Leaflet 0.031821433333333336 0.0 0.0954643 Fertile Leaflet with Sori 3.515223333333333 2.59915 4.54896 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0