condition mean min max Sterile Frond 1.5596500000000002 0.0 4.67895 Fertile Frond 9.1993 0.0 27.5979 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0