condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 5.364847666666667 0.052613 12.9922 Root 1.23715 0.0 1.99955