condition mean min max Sterile Frond 6.231133333333333 0.0 18.6934 Fertile Frond 2.915513333333333 0.0 8.74654 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.433481 0.0 0.711068 Root 0.0 0.0 0.0