condition mean min max Sterile Leaflet 3.229309333333333 0.212228 6.07853 Fertile Leaflet with Sori 0.31336733333333333 0.0 0.812132 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