condition mean min max Sterile Leaflet 0.141659 0.0 0.226824 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.022554966666666666 0.0 0.0676649 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.2271696666666667 0.0 0.625998 Root 6.12696 0.16205 15.6491