condition mean min max Sterile Leaflet 2.05439 0.0 6.16317 Fertile Leaflet with Sori 0.07624033333333334 0.0 0.228721 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