condition mean min max Sterile Frond 0.6116413333333333 0.0 1.46745 Fertile Frond 0.8438859999999999 0.0 2.11543 Young Stem with Root 0.51637 0.0 1.54911 Mature Stem with Root 0.0 0.0 0.0 Root 2.8603133333333335 0.0 8.58094