condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.59455 0.0 1.78365 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 7.019046 0.087308 18.2817 Root 0.39468333333333333 0.0 0.887768