condition mean min max Sterile Leaflet 0.5274633333333333 0.0 1.58239 Fertile Leaflet with Sori 3.31671 0.0 8.49159 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.5635576666666666 0.0 0.994912 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0