condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 8.638693333333332 1.95607 21.5916 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.033819666666666665 0.0 0.101459 Root 0.0 0.0 0.0