condition mean min max Sterile Frond 4.034723333333334 0.0 8.1309 Fertile Frond 1.4818966666666666 0.0 2.76643 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