condition mean min max Sterile Leaflet 1.8454706666666665 0.0 4.9205 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 2.848009666666667 0.718399 6.33865 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0