condition mean min max Sterile Leaflet 0.23311800000000002 0.0 0.699354 Fertile Leaflet with Sori 2.2409600000000003 0.0 4.13123 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.16099833333333333 0.0 0.482995 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0