condition mean min max Sterile Leaflet 12.282766666666667 5.6637 17.3333 Fertile Leaflet with Sori 33.1815 17.976 47.4137 Primary Rachis 0.206618 0.0 0.437664 Secondary Rachis 3.72531 3.59569 3.79026 Petiole 0.2500733333333333 0.0 0.75022 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0