condition mean min max Sterile Leaflet 0.7230011 0.0 2.08505 Fertile Leaflet with Sori 0.23211266666666666 0.0 0.696338 Primary Rachis 1.8615553333333332 0.0 5.07508 Petiole 0.0324273 0.0 0.0972819 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0