condition mean min max Sterile Frond 0.8892133333333333 0.0 2.66764 Fertile Frond 2.8297333333333334 0.0 8.4892 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