condition mean min max Sterile Leaflet 0.080813 0.0 0.242439 Fertile Leaflet with Sori 1.822035 0.842005 2.44906 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.08849633333333333 0.0 0.265489 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0