condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 4.2965 0.0 12.8895 Primary Rachis 0.09264466666666667 0.0 0.277934 Secondary Rachis 1.2440333333333333 0.0 3.7321 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0