condition mean min max Sterile Frond 15.663763333333334 9.93229 24.1275 Fertile Frond 14.62123 9.41219 18.5508 Young Stem with Root 14.861899999999999 12.3156 19.8925 Mature Stem with Root 16.478099999999998 11.7394 24.1041 Root 14.525503333333333 6.52341 23.5514