condition mean min max Sterile Frond 4.21723 0.0 10.2133 Fertile Frond 1.2309436666666667 0.0 3.28301 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