condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 2.115256666666667 0.0 6.34577 Mature Stem with Root 0.21167166666666667 0.0 0.635015 Root 6.351400000000001 0.0 19.0542