condition mean min max Sterile Leaflet 0.25946933333333333 0.0 0.401462 Fertile Leaflet with Sori 2.887259 0.482387 4.21742 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.5499976666666667 0.0 1.51319 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0