condition mean min max Sterile Leaflet 2.858911 0.278503 5.16293 Fertile Leaflet with Sori 0.19486333333333336 0.0 0.58459 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.44609666666666664 0.0 1.33829 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0