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 5.190436666666667 0.0 13.6531 Root 8.024966666666666 1.21714 17.4275