condition mean min max Sterile Leaflet 1.1763743333333332 0.152576 2.73473 Fertile Leaflet with Sori 3.1225626333333336 0.0914689 8.7392 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.1311429 0.0 0.315115 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0