condition mean min max Sterile Leaflet 4.019213333333333 3.76511 4.16626 Fertile Leaflet with Sori 3.7027900000000002 3.40871 4.26381 Primary Rachis 3.11435 2.29432 4.08706 Secondary Rachis 2.7342133333333334 2.31197 3.35263 Petiole 3.2929033333333333 2.51497 3.92833 Crozier 3.93489 3.51662 4.70553 Root 2.55703 2.04958 3.56675