condition mean min max Sterile Leaflet 1.8579750000000002 0.299954 4.4709 Fertile Leaflet with Sori 2.048433333333333 1.45145 2.6122 Primary Rachis 0.952959 0.466157 1.23464 Petiole 2.4536633333333335 1.40002 4.35205 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0