How to typeset asymmetrical confidence level limits / uncertainties with amsmath?

Question

Below is an example of an asymmetrical limit (or uncertainty)

How can I typeset this in a \LaTeX equation? Such pair of numbers should be vertically stacked while being vertically center-aligned with rest of the equation.

Answer 1

The solution is somewhat trivial

z=1.0^{+0.5}_{-0.3}