condition mean min max Sterile Leaflet 2.0926223333333334 0.531717 4.41298 Fertile Leaflet with Sori 0.83445 0.0 2.50335 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.12806033333333333 0.0 0.384181 Root 0.0 0.0 0.0