Brightness profiles of our synthetic observations at different latitudes. The top panel shows the surface brightness B for the β-model halo bubble and the bottom panel for the multicomponent model bubble for the latitudes ±40°, ±50°, and ±60° along the longitudes α_G. Only the northern brightness profiles of our synthetic observations (black) are shown and compared to the data of the northern (red) and southern (blue) EB from Predehl et al. (2020). The northern eROSITA data was shifted by 16.5° to the east. Furthermore, a constant background X-ray radiation was added to our data similarly to Fig. 3 to better compare it to the observations.