condition mean min max Sterile Leaflet 0.10265200000000001 0.0 0.307956 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 0.9242276666666667 0.0 2.05726 Root 9.146413333333333 1.24345 19.8222