Gamma-ray luminosity from the CMZ projected from Sgr A* along the Galactic disk for a continuous source. The profile was binned in the regions shown in the bottom panel of Fig. 2. Black dots denote the observed gamma-ray luminosity. Cyan triangles, yellow squares, red triangles, and blue diamonds are the gamma-ray luminosity from the CMZ as a nonuniform disk, uniform disk, nonuniform ring, and uniform ring, respectively. Most cyan triangles are behind the corresponding yellow squares, just as the red triangles and blue diamonds.