condition mean min max Sterile Frond 0.04647366666666666 0.0 0.139421 Fertile Frond 2.2713553333333336 0.0 6.38217 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.046162 0.0 0.138486