Legend:

1. barycentric age = x ± y (| z)

   x: |
   y: | .
   z: |

2. MSWD = x, p(χ2) = y

   x: |
   y: |

3. dispersion = x ± y

   x: |
   y: | .

Aitchison, J., 1982, The statistical analysis of compositional data. Journal of the Royal Statistical Society, v. 44, p. 139-177.

Aitchison, J., 1986, The statistical analysis of compositional data. London, Chapman and Hall, 416 p.

Vermeesch, P., 2008. Three new ways to calculate average (U-Th)/He ages. Chemical Geology, 249(3), pp.339-347.

Vermeesch, P., 2010. HelioPlot, and the treatment of overdispersed (U-Th-Sm)/He data. Chemical Geology, 271(3), pp.108-111.