condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 1.90822 0.0 5.72466 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.53117 0.0 1.59351 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0