condition mean min max Sterile Frond 0.07481600000000001 0.0 0.224448 Fertile Frond 2.3826033333333334 0.0 7.14781 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.4048866666666667 0.0 1.21466 Root 0.0 0.0 0.0