condition mean min max Sterile Frond 0.6873633333333333 0.0 2.06209 Fertile Frond 2.1124233333333335 0.0 6.33727 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0