condition mean min max Sterile Frond 0.3452033333333333 0.0 1.03561 Fertile Frond 1.7684866666666668 0.0 5.30546 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0