condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 8.249156666666668 0.0 16.2463 Mature Stem with Root 0.25757800000000003 0.0 0.772734 Root 0.0 0.0 0.0