condition mean min max Sterile Leaflet 4.17247 1.65011 6.51085 Fertile Leaflet with Sori 1.115277 0.493467 1.97825 Primary Rachis 0.14557166666666665 0.0 0.280558 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0