condition mean min max Sterile Frond 14.858766666666668 11.7871 17.7127 Fertile Frond 16.4324 12.6214 20.6879 Young Stem with Root 19.2321 15.8227 22.3138 Mature Stem with Root 23.3795 20.5259 28.5414 Root 16.7863 14.397 19.8736