condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.09517166666666667 0.0 0.285515 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 3.16921 0.0 4.76077