condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.219525 0.0 0.658575 Mature Stem with Root 0.0 0.0 0.0 Root 2.3217433333333335 0.0 6.96523