condition mean min max Sterile Frond 4.628 0.0 13.884 Fertile Frond 1.5122099999999998 0.0 4.53663 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.13145233333333334 0.0 0.394357 Root 0.0 0.0 0.0