condition mean min max Sterile Leaflet 0.10388633333333334 0.0 0.311659 Fertile Leaflet with Sori 7.334794333333333 0.314169 21.3537 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.100143 0.0 0.300429 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0