condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.10191366666666667 0.0 0.305741 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.7807399999999998 0.0 8.34222 Root 11.359373333333332 0.0 32.7328