condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.044186 0.0 0.132558 Mature Stem with Root 1.3641606666666668 0.0 3.98993 Root 6.721115 0.12323 19.8655