Spectra obtained with the IRAM 30-meter (in purple) as part of the ASAI large program vs spectra from our observations obtained with the NOEMA radio-interferometer (in black). In order to compare these two datasets, we degraded the spectral resolution of the ASAI data to 2 MHz. The dotted red lines mark the velocity range over which the flux was integrated. The NOEMA spectra were obtained by spatially averaging the flux over the half-power beam size of the IRAM 30-m telescope used for the ASAI observations. The horizontal blue line marks the zero intensity level of each spectrum.