condition mean min max Sterile Frond 2.039787 0.877581 3.78782 Fertile Frond 1.6372036666666667 0.0 3.93026 Young Stem with Root 1.83226 0.0 5.49678 Mature Stem with Root 4.295453333333334 1.0387 8.99642 Root 9.3408 0.0 17.2628