condition mean min max Sterile Leaflet 2.23584 0.0 6.70752 Fertile Leaflet with Sori 0.04650833333333334 0.0 0.139525 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.030429233333333333 0.0 0.0912877 Root 0.0 0.0 0.0