condition mean min max Sterile Leaflet 0.423091 0.0 0.681357 Fertile Leaflet with Sori 0.0 0.0 0.0 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 2.8526126666666665 0.751858 4.20604