condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.10306 0.0 0.30918 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 3.0948606666666665 0.325732 7.82628 Root 0.0 0.0 0.0