condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 2.6737046666666666 0.651524 4.83164 Petiole 0.756688 0.150049 1.3493 Crozier 0.042735 0.0 0.128205 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0