condition mean min max Sterile Frond 1.9056333333333333 0.0 5.7169 Fertile Frond 0.7426724333333333 0.0 2.14366 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