condition mean min max Sterile Leaflet 5.13155 0.0 13.7979 Fertile Leaflet with Sori 0.09912633333333333 0.0 0.297379 Primary Rachis 0.31077133333333334 0.0 0.932314 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0