condition mean min max Sterile Leaflet 2.2674133333333333 0.0 5.17053 Fertile Leaflet with Sori 0.0195919 0.0 0.0587757 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.24039483333333334 0.0 0.671185 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0