condition mean min max Sterile Frond 16.744266666666668 10.3689 23.3462 Fertile Frond 17.9349 15.3089 21.7476 Young Stem with Root 16.854100000000003 10.3345 21.0957 Mature Stem with Root 14.139563333333333 9.11569 18.7043 Root 11.06102 9.83586 13.1892