condition mean min max Sterile Frond 4.23423 2.8573 5.16714 Fertile Frond 4.976646666666666 3.50831 7.19527 Young Stem with Root 4.435836666666667 3.26519 6.52177 Mature Stem with Root 4.7884400000000005 3.77593 6.35317 Root 2.75507 1.46778 4.42917