condition mean min max Sterile Leaflet 0.647606 0.0 1.69894 Fertile Leaflet with Sori 2.3773143333333335 0.265113 5.27099 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.7246996666666667 0.25077 4.1185 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0