condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 2.8267196666666665 0.921039 4.47807 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.18212433333333333 0.0 0.546373 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0