condition mean min max Sterile Leaflet 2.66208 0.0 4.50015 Fertile Leaflet with Sori 0.9898466666666667 0.0 2.96954 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