condition mean min max Sterile Leaflet 0.4379866666666667 0.0 0.746314 Fertile Leaflet with Sori 3.0661793333333334 0.134188 7.44379 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0