condition mean min max Sterile Leaflet 3.567676666666667 0.0 7.68952 Fertile Leaflet with Sori 0.3380033333333334 0.0 1.01401 Primary Rachis 0.103197 0.0 0.309591 Petiole 0.113302 0.0 0.339906 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0