Values for the stellar opacities in the log(T) vs. log(ρ) plane for Z = 10⁻⁴. The color map denotes the value of the logarithm of the opacity in [cm² g⁻¹]. The limits for the domains of each opacity table/prescription are shown in white. The solid lines represent the boundaries in temperature, while the dashed lines represent the boundaries in ℛ values. The intermediate regions between the low T and high T tables, as wells as between the high T and the Compton opacities, are the blending zones between such domains. The low and high T tables are being extrapolated when ℛ < 10⁻¹ or T < 500K by considering the nearest neighbor value in terms of the temperature and ℛ.