Elucidating the errors, in the synthetic spectra, associated with using different spectral resolutions to construct the k-distribution tables. The reference case uses a spectral resolution of ﹩{10}^{-5}﹩ cm⁻¹. The label “ppb” refers to the number of points per bin. All of the synthetic spectra were computed for model atmospheres in chemical and radiative equilibrium using the correlated-k approximation. We either run the whole radiative transfer iterative process (solid) or solely post-process the T–P profile of the reference case (dotted). For illustration, we examine models of cool (GJ 1214b; left panel) and hot (WASP-12b; right panel) exoplanetary atmospheres.