condition mean min max Sterile Leaflet 3.59692 0.0 5.86037 Fertile Leaflet with Sori 2.216235 0.785975 4.68341 Primary Rachis 0.2994556666666667 0.155292 0.579594 Petiole 0.9547226666666666 0.642508 1.49583 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0