condition mean min max Sterile Leaflet 0.107811 0.0 0.323433 Fertile Leaflet with Sori 2.1242633333333334 0.0 5.33089 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.173319 0.409754 2.32982 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0