condition mean min max Sterile Leaflet 0.962487 0.0 1.88765 Fertile Leaflet with Sori 5.017683333333333 2.18261 9.91735 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.154437 0.0 0.246516 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0