condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.74219 0.0 2.22657 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 1.261118 0.766092 2.1332 Root 5.674996666666666 0.0 16.7674