condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 2.5209163333333335 0.0 7.16366 Young Stem with Root 0.246467 0.0 0.739401 Mature Stem with Root 4.790789999999999 0.0 8.78615 Root 1.323115 0.0 3.60866