The likelihood function ﹩P({\widehat{D}}_{T}| {\alpha }_{r}-{\alpha }_{n},({\alpha }_{r}+{\alpha }_{n})| | {\rm{\Delta }}| | ,\theta )﹩, obtained by linearizing Equation (25) in k · Δ. Here evaluation is again for the small translation simulation 8 (as in Figures 8 and 9). One can see that this reduced set of model parameters (in the linearized likelihood) does not show a strong dependence and may therefore be preferable in the small translation limit.