condition mean min max Sterile Frond 1.102234 0.0 2.78395 Fertile Frond 3.3022533333333337 0.0 8.34787 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.10857733333333335 0.0 0.325732 Root 0.0 0.0 0.0