condition mean min max Sterile Frond 15.32461 2.22304 41.3527 Fertile Frond 8.257833333333334 1.7872 20.6215 Young Stem with Root 2.7257033333333336 0.0 6.50694 Mature Stem with Root 12.47957 1.1172 31.5968 Root 1.389656 0.393608 2.02708