condition mean min max Sterile Leaflet 11.199293333333333 4.08876 24.0157 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.10899566666666667 0.0 0.326987 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0