condition mean min max Sterile Leaflet 3.2199479999999996 0.0 9.26264 Fertile Leaflet with Sori 0.8991436666666667 0.0 2.3151 Primary Rachis 0.0 0.0 0.0 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