condition mean min max Sterile Leaflet 1.83307 0.0 4.37318 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 6.838069333333333 0.292438 17.3139 Petiole 0.41550133333333333 0.0 0.910947 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0