condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 2.4248696666666665 0.0 7.05593 Rhizome 0.0 0.0 0.0 Root 0.28675633333333334 0.0 0.860269