condition mean min max Sterile Frond 17.738699999999998 16.6432 19.4824 Fertile Frond 16.922633333333334 14.9783 20.6272 Young Stem with Root 13.161783333333332 7.90665 19.0203 Mature Stem with Root 15.0932 12.7942 17.636 Root 12.78947 8.76941 18.0125