condition mean min max Sterile Frond 5.262866666666667 0.0 15.7886 Fertile Frond 5.2345999999999995 0.0 15.7038 Young Stem with Root 5.324928 0.0 15.4477 Mature Stem with Root 3.6287399999999996 0.0 9.709 Root 9.107925333333334 0.0 26.6555