condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 7.190458 0.0 21.1327 Young Stem with Root 8.14981 1.29285 21.3812 Mature Stem with Root 1.4021293333333333 0.0 3.36968 Root 1.356 0.0 2.2048