condition mean min max Sterile Leaflet 4.260713333333333 2.48484 5.18985 Fertile Leaflet with Sori 3.97276 3.79652 4.29852 Primary Rachis 4.041353333333333 3.64007 4.69204 Petiole 3.7518 3.65066 3.81786 Crozier 3.18723 2.7098 3.57458 Rhizome 2.86011 2.30192 3.39785 Root 1.553051 0.955823 1.99817