Fig. 4.

A) Estimated $\sigma$ values for simulations with different $\sigma$ and $\rho$ values. Median value and 95 % CI are shown. The black line is the simulated (true) value of $\sigma$ in each case. B) Imprecision of $\sigma$ estimates calculated as the 95 % quantile range. C) Inaccuracy of the $\sigma$ estimates, calculated as the difference between the posterior median and the true value.