Top panel: observed day side fluxes of HD 189733b and our best fit model predictions (see legend inthe plot). Bottom panels: retrieved T-P profile along with corresponding averaging kernels and mixing ratios of molecular species. We used the T-P profile of Lee et al. (2012) a priori (shown as red crosses). Our best fit model is shown with a solid blue line and the shaded area represents 1σ error bars. The assumed a priori are shown as a green dashed line (which coincides with the red crosses in this particular case). The same color-coding is used for the four side plots of mixing ratios (on the right).