| Method | 95% HPD interval estimation | |
| 0.025 | 0.975 | |
| Monte-Carlo integration (exact) Scale Approximation Modal Approximation Averaging Approximation Edgeworth Expansion Normal Approximation (Welch) | −27.70 −27.48 −27.52 −27.46 −27.61 −27.69 | −18.55 −18.36 −18.41 −18.61 −18.44 −18.40 |