condition mean min max Sterile Frond 3.88028 0.41809 9.67409 Fertile Frond 1.1020686666666668 0.0 3.11574 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.16415266666666667 0.0 0.272098 Root 0.0 0.0 0.0