Analytic solution to M _NSE as a function of parameterized X′ ₂₂ and using standard error propagation to obtain the uncertainty based on the standard deviation of the mean (dashed lines). The vertical dot-dashed line indicates the parameter space in which this study was performed. These results were evaluated for the fiducial transition density of 6.76 × 10 ⁶ g cm ⁻³ corresponding to X′ ₂₂ = 0.03.