condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 2.7613866666666667 1.14915 4.6699 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.14858466666666667 0.0 0.343548 Petiole 0.048555999999999995 0.0 0.145668 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0