condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 2.33141 1.733 2.84449 Primary Rachis 0.0536885 0.0 0.116819 Petiole 0.0 0.0 0.0 Crozier 0.29095766666666667 0.111977 0.413313 Rhizome 0.20642400000000002 0.0 0.619272 Root 0.0 0.0 0.0