condition mean min max Sterile Leaflet 0.641529 0.257744 0.917025 Fertile Leaflet with Sori 7.74573 0.0 13.5914 Primary Rachis 0.7138196666666666 0.0 1.53317 Secondary Rachis 1.2753033333333335 0.0 2.65246 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0