condition mean min max Sterile Leaflet 8.71345 4.03885 11.0782 Fertile Leaflet with Sori 7.68275 6.15967 9.15347 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 7.607213333333333 3.3706 13.5754 Petiole 0.05698866666666667 0.0 0.170966 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0