condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.56111 0.0 1.68333 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.357507666666667 0.386723 3.70808 Root 0.22599066666666667 0.0 0.567887