condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 2.20228 0.0 6.60684 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.05493976666666667 0.0 0.126759 Root 0.3663476666666667 0.178884 0.645271