condition mean min max Sterile Frond 7.375694333333333 0.0 21.7872 Fertile Frond 0.33596333333333334 0.0 1.00789 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