condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.027179366666666666 0.0 0.0815381 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.224006 0.0 6.48147 Root 1.26245 0.0 3.78735