condition mean min max Sterile Frond 1.8966333333333334 0.0 4.83343 Fertile Frond 0.4268633333333333 0.0 1.28059 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