condition mean min max Sterile Frond 2.9302900000000003 1.05087 5.77657 Fertile Frond 11.91098 6.80919 20.12 Young Stem with Root 13.66073 3.67549 22.247 Mature Stem with Root 4.900276 0.300258 12.4469 Root 4.835893333333333 0.0 12.3285