Here are the normal approximations to the marginal posteriors in the
TE trial data (plotted in Figure 8.8, page 296):
Monitoring point 1: Normal with mean 0, sd infinity (flat posterior)
Monitoring point 2: Normal with mean 0.021, sd 0.664
Monitoring point 3: Normal with mean 0.491, sd 0.393
Monitoring point 4: Normal with mean 0.620, sd 0.312