condition mean min max Sterile Frond 0.20182266666666668 0.0 0.605468 Fertile Frond 2.093564333333333 0.0 5.90309 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