condition mean min max Sterile Frond 17.2466 13.7455 19.6019 Fertile Frond 17.974899999999998 12.9797 24.4658 Young Stem with Root 16.386466666666667 13.8447 20.6765 Mature Stem with Root 10.65298 8.51314 11.7682 Root 8.166143333333334 6.18412 11.2233