condition mean min max Sterile Frond 0.7089863333333333 0.0 1.97619 Fertile Frond 0.5551366666666667 0.0 1.66541 Young Stem with Root 0.41138 0.0 1.23414 Mature Stem with Root 2.79414 0.0 8.38242 Root 1.9859499999999999 0.0 5.95785