condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.172123 0.0 0.516369 Mature Stem with Root 0.0 0.0 0.0 Root 4.4130666666666665 0.0 13.2392