condition mean min max Sterile Leaflet 0.10758833333333334 0.0 0.322765 Fertile Leaflet with Sori 3.7310666666666665 0.0 6.01728 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