condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 6.528133333333333 0.0 19.5844 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 20.66326 5.66768 29.0727 Root 4.790044666666667 0.0 13.8486