condition mean min max Sterile Leaflet 2.520376666666667 0.0 4.88858 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.3554933333333334 0.0 1.06648 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.088439 0.0 0.265317