condition mean min max Sterile Frond 0.44460666666666665 0.0 1.33382 Fertile Frond 2.240473333333333 0.0 5.82782 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.54713 0.0 1.64139 Root 0.0 0.0 0.0