condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.00012416466666666668 0.0 0.000372494 Mature Stem with Root 3.2389566666666667 0.0 9.71687 Root 1.3670099999999998 0.0 4.10103