condition mean min max Sterile Leaflet 0.37274 0.0 1.11822 Fertile Leaflet with Sori 2.1530066666666667 0.0 6.45902 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.59975 0.0 4.79925 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0