condition mean min max Sterile Frond 4.554295 0.420175 9.41644 Fertile Frond 2.66645 0.0 7.57723 Young Stem with Root 2.31124 1.72356 2.74684 Mature Stem with Root 1.9199799999999998 1.33327 2.32068 Root 1.2645666666666666 0.0 1.93778