condition mean min max Sterile Leaflet 3.8831200000000003 0.0 7.77291 Fertile Leaflet with Sori 0.186379 0.0 0.423757 Primary Rachis 3.405456666666667 0.131305 9.64433 Petiole 0.04253933333333334 0.0 0.127618 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0