condition mean min max Sterile Leaflet 0.30677933333333335 0.0 0.610631 Fertile Leaflet with Sori 2.1304376666666665 0.0 5.59021 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