condition mean min max Sterile Leaflet 8.25813 6.67036 10.2731 Fertile Leaflet with Sori 3.16132 2.00441 4.40231 Primary Rachis 2.63114 2.08638 3.62993 Secondary Rachis 4.56945 1.57217 7.26177 Petiole 1.4072033333333334 0.0 2.69018 Crozier 3.31475 1.77544 4.50433 Root 1.82241 1.00719 2.52057