condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 1.1336633333333335 0.0 3.40099 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 1.80306 0.0 3.58305 Root 8.369629 0.543617 21.444