condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 3.19223 0.0 9.57669 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.25124233333333335 0.0 0.623444