condition mean min max Sterile Leaflet 2.381905 0.0 6.41014 Fertile Leaflet with Sori 0.058596666666666665 0.0 0.17579 Primary Rachis 0.0 0.0 0.0 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