condition mean min max Sterile Leaflet 2.14751 0.0 3.56037 Fertile Leaflet with Sori 0.7704666666666666 0.0 1.92991 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.5380486666666666 0.0 0.994912 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0