Side-by-side plot of HIFI and upGREAT data gridded with an 18 arcsecond beam. The variation in integrated intensity between −5 and 15 km s⁻¹ is shown. The array positions highlighted in gray show the location of the Orion bar consistency observation. The map is generated with a 18.1 arcsecond kernel. The smoother map shown for upGREAT shows the difference between a fully sampled (5.2-arcsecond sample) and the HIFI partially sampled grid (10-arcsecond sample). See Fig. A.13for an overview of the OTF dump positions.