condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.145318 0.0 0.435954 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.5526643333333334 0.406403 6.11453 Root 0.17225033333333334 0.0 0.37243