condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 1.38548 0.0 4.15644 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 3.3451 1.29385 4.8563 Root 1.2038167 0.0 3.55152