condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 3.6533303333333333 0.0 10.2266 Young Stem with Root 0.202258 0.0 0.338771 Mature Stem with Root 2.2300166666666668 0.0 4.00708 Root 0.314093 0.0 0.942279