condition mean min max Sterile Leaflet 0.59539 0.0 1.78617 Fertile Leaflet with Sori 0.0 0.0 0.0 Petiole 0.3664833333333333 0.0 0.711894 Crozier 0.0 0.0 0.0 Rhizome 0.91921 0.0 2.75763 Root 2.8539033333333332 0.0 7.21241