CO(7–6) integrated intensity image (FWHM = 42^″; pixel size = 30^″). In our FTS observations, CO(7–6) is one of the brightest and most sensitive transitions (Table 1; Sect. 4). Over the grayscale image, the spectrum of each pixel is overlaid, the x- and y-axis ranges of which (in GHz and 10⁻¹⁸ W m⁻² Hz⁻¹ sr⁻¹) are indicated in the top left corner with an example spectrum. This spectrum is from the pixel that was observed with the two central detectors SLWC3 and SSWD4 (yellow and orange crosses) of the first jiggle observation of the Obs. ID = 1342219550. The spectra in red and blue represent detections and nondetections based on our threshold of statistical signal-to-noise ratio (S∕N_s) = 5 (Sect. 4.1).