condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.033607 0.0 0.0713665 Petiole 0.0116877 0.0 0.0350631 Crozier 0.0 0.0 0.0 Rhizome 0.03223586666666667 0.0 0.0967076 Root 3.063876666666667 0.28675 5.45808