condition mean min max Sterile Leaflet 0.3153276666666667 0.0 0.698926 Fertile Leaflet with Sori 1.6781 1.21457 2.08711 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.9597016666666667 0.762275 3.82959 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0