condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.16596566666666665 0.0 0.497897 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.07903433333333333 0.0 0.237103 Root 4.60046 0.0 7.37498