condition mean min max Sterile Leaflet 1.8672046666666666 0.951844 3.53124 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.03218063333333333 0.0 0.0780823 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0