TS maps for a 5° ×5° region centered on IRAS 18162−2048. Contour maps show the detection significance, while color maps indicate the TS value of each spatial bin. The green cross indicates the position of the protostar driving the HH 80-81 system. Panels (a), (b), and (c) show the significance map for HH 80-81 above 300 MeV, 500 MeV, and 700 MeV, respectively. Panel (d) shows the residual TS map above 300 MeV as proof of the reliability of our fit model.