condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.312985 0.0 0.938955 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 4.4695073333333335 0.110132 11.9617 Root 0.039710666666666665 0.0 0.119132