condition mean min max Sterile Leaflet 0.316969 0.0 0.67974 Fertile Leaflet with Sori 3.901397333333333 0.217812 9.49537 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.050934 0.0 2.80801 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.246473 0.0 0.511787