condition mean min max Sterile Leaflet 2.9461099999999996 0.0 8.83833 Fertile Leaflet with Sori 0.042954 0.0 0.128862 Primary Rachis 0.18799666666666667 0.0 0.56399 Petiole 0.102762 0.0 0.308286 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0