condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.21336999999999998 0.0 0.64011 Mature Stem with Root 2.75181 0.0 7.893 Root 4.593933333333333 0.0 13.7818