condition mean min max Sterile Leaflet 4.334582 0.0 12.8293 Fertile Leaflet with Sori 0.053493000000000006 0.0 0.160479 Primary Rachis 0.5250026666666666 0.0 0.79155 Petiole 0.050655 0.0 0.151965 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0