condition mean min max Sterile Leaflet 0.27316633333333334 0.0 0.819499 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.7013886666666667 0.257397 1.54027 Root 19.5524 13.9516 23.8861