condition mean min max Sterile Leaflet 0.669632 0.329867 1.29901 Fertile Leaflet with Sori 0.311339 0.0 0.934017 Primary Rachis 0.24533533333333332 0.0 0.398121 Petiole 0.0 0.0 0.0 Crozier 3.2328400000000004 1.74244 4.92656 Rhizome 1.498087 0.370451 2.77181 Root 0.0 0.0 0.0