condition mean min max Sterile Leaflet 3.2203733333333333 0.0 5.11609 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.2935103333333333 0.0 0.475593 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