condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.58565 0.0 1.75695 Mature Stem with Root 9.578849666666667 0.0 28.4002 Root 1.65697 0.0 3.87548