condition mean min max Sterile Leaflet 0.08313433333333334 0.0 0.249403 Fertile Leaflet with Sori 3.7472 0.0 11.2416 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.102198 0.0 0.306594 Root 0.0 0.0 0.0