condition mean min max Sterile Leaflet 3.8648766666666665 3.17839 5.03345 Fertile Leaflet with Sori 2.7790133333333333 1.32315 5.25566 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0