condition mean min max Sterile Leaflet 2.155321333333333 0.0 6.25531 Fertile Leaflet with Sori 2.669293333333333 0.0 6.78004 Primary Rachis 2.483165666666667 0.0 6.64341 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