condition mean min max Sterile Leaflet 0.5410986 0.0481618 1.05942 Fertile Leaflet with Sori 1.9662956666666667 0.624297 2.8819 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.37611 0.268959 0.55991 Petiole 0.0179933 0.0 0.0539799 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0