condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.0 0.0 0.0 Petiole 0.067856 0.0 0.203568 Crozier 0.0 0.0 0.0 Rhizome 0.5492043333333334 0.0 1.28347 Root 6.867256666666667 0.55619 19.2041