condition mean min max Sterile Leaflet 0.096402 0.0 0.289206 Fertile Leaflet with Sori 2.791226 0.534068 4.47217 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.21246866666666667 0.0 0.637406 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.115517 0.0 0.346551