condition mean min max Sterile Leaflet 1.7901992333333334 0.0630337 4.73982 Fertile Leaflet with Sori 1.73267 1.18442 2.30911 Primary Rachis 0.015366233333333333 0.0 0.0460987 Secondary Rachis 0.8398703333333334 0.390471 1.07254 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0