condition mean min max Sterile Leaflet 6.131146666666667 4.66199 8.79179 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.05756766666666666 0.0 0.172703 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0