condition mean min max Sterile Leaflet 0.23217 0.0 0.69651 Fertile Leaflet with Sori 0.126318 0.0 0.378954 Primary Rachis 3.2067266666666665 1.64992 6.00716 Petiole 1.99159 1.13122 2.85137 Crozier 0.0 0.0 0.0 Rhizome 0.07483533333333334 0.0 0.224506 Root 0.0 0.0 0.0