condition mean min max Sterile Leaflet 0.39066466666666666 0.139072 0.736753 Fertile Leaflet with Sori 2.831171 0.711643 6.7532 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.16558 0.0 3.49674 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0