condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 4.8190333333333335 0.0 14.4571 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 11.45481 3.87333 16.966 Root 3.3896546666666665 0.0 9.97581