condition mean min max Sterile Frond 0.33563166666666666 0.0 0.777282 Fertile Frond 0.087463 0.0 0.262389 Young Stem with Root 5.278106666666667 1.19608 9.80208 Mature Stem with Root 1.3102099999999999 0.0 2.74509 Root 0.0 0.0 0.0