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 6.8076946666666664 0.233064 16.2119 Root 1.62179 0.0 3.41594