condition mean min max Sterile Frond 2.060923 0.0 6.04014 Fertile Frond 0.36705533333333334 0.0 0.687802 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.15363933333333332 0.0 0.460918 Root 0.069136 0.0 0.207408