condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.04851866666666666 0.0 0.145556 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.3161333333333336 0.0 6.9484 Root 0.63193 0.0 1.89579