condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.077256 0.0 0.231768 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 3.21383 0.0 6.07455 Root 0.5461033333333333 0.0 1.63831