condition mean min max Sterile Leaflet 1.702744 0.0 4.13593 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 4.302140666666666 0.765692 9.29661 Petiole 0.2685106666666667 0.0 0.805532 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0