condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.119589 0.0 0.358767 Mature Stem with Root 3.4432953333333334 0.406096 7.08859 Root 1.88576 0.0 3.1558