condition mean min max Sterile Leaflet 0.5089316666666667 0.206397 1.10126 Fertile Leaflet with Sori 3.7045733333333333 0.0 5.62861 Primary Rachis 0.0 0.0 0.0 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