condition mean min max Sterile Frond 2.31183 0.0 6.93549 Fertile Frond 1.5576543 0.0 4.62986 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 1.2108646666666667 0.0 3.38431 Root 0.1376675 0.0 0.374593