condition mean min max Sterile Leaflet 0.046422333333333336 0.0 0.139267 Fertile Leaflet with Sori 0.697566 0.484295 1.00336 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.949363 0.142269 4.00521 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0