condition mean min max Sterile Frond 17.136766666666666 15.2051 18.9436 Fertile Frond 15.7958 12.7249 19.7065 Young Stem with Root 21.384833333333333 18.8231 26.2393 Mature Stem with Root 23.953100000000003 16.1306 29.7569 Root 16.0455 12.493 20.2823