condition mean min max Sterile Frond 1.0978516666666667 0.0 2.75847 Fertile Frond 2.6668333333333334 1.24382 5.33896 Young Stem with Root 0.23447900000000002 0.0 0.425306 Mature Stem with Root 6.1675 0.0 17.4842 Root 1.740317 0.904071 2.55902