condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.08814966666666667 0.0 0.264449 Mature Stem with Root 13.029682999999999 0.0 38.5618 Root 10.1825 0.0 30.5475