condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.10884366666666667 0.0 0.326531 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 6.676066666666666 0.0 20.0282 Root 0.19888799999999998 0.0 0.596664