condition mean min max Sterile Leaflet 1.795118 0.966984 3.24943 Fertile Leaflet with Sori 0.7517523333333334 0.581087 0.938686 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.378176 0.237244 0.632677 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0