condition mean min max Sterile Frond 3.2338 0.0 9.7014 Fertile Frond 1.4863666666666668 0.0 4.4591 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