condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.103396 0.0 0.310188 Petiole 0.119006 0.0 0.357018 Crozier 0.0 0.0 0.0 Rhizome 0.21083466666666667 0.0 0.329538 Root 11.770523333333333 2.12923 29.6876