condition mean min max Sterile Frond 0.51232 0.0 1.53696 Fertile Frond 1.8144133333333334 0.0 5.44324 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