Upper panel: comparison in T_B scale of the NH₂CHO (4_1,4–3_1,3) spectrum as observed using the IRAM 30 m antenna (Mendoza et al. 2014) and that extracted from the present NOEMA map from a circular region equal to the IRAM 30 m HPBW (30″). F_ν(Jy) = 4.9493 T_B(K). The NOEMA spectrum has been smoothed to match the IRAM 30 m velocity resolution. Lower panel: emission (in T_B scale) extracted at the peak of the formamide spatial distribution (see Fig. 2). Horizontal dashed line indicates the 1σ noise level (13 mK).