condition mean min max Sterile Frond 0.30065166666666665 0.0 0.666882 Fertile Frond 4.610433333333333 0.0 12.4941 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