condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 2.103197 0.0 5.7515 Young Stem with Root 0.992969 0.0 2.6622 Mature Stem with Root 0.0 0.0 0.0 Root 0.037941666666666665 0.0 0.113825