condition mean min max Sterile Leaflet 8.535083666666667 0.959481 15.2613 Fertile Leaflet with Sori 17.07833 3.16069 24.8898 Primary Rachis 0.33107433333333336 0.0 0.881491 Secondary Rachis 6.11291 1.19073 15.1684 Petiole 0.4140715 0.0 1.18952 Crozier 0.0 0.0 0.0 Root 0.2375343 0.0463829 0.33446