condition mean min max Sterile Leaflet 0.11003233333333333 0.0 0.330097 Fertile Leaflet with Sori 2.336468 0.333354 3.83414 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.42472333333333334 0.0 1.27417 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0