condition mean min max Sterile Frond 14.140799999999999 11.5564 16.4184 Fertile Frond 17.7047 13.2722 24.4883 Young Stem with Root 18.364766666666668 16.602 21.8384 Mature Stem with Root 20.419066666666666 15.5879 23.9737 Root 15.965300000000001 13.2181 18.6918