Comparison of the integrated CO(J = 2−1) emission line flux between the ACA (this work) and APEX (Colombo et al. 2020) data sets for 51 ACA galaxies. ACA fluxes are derived after convolving the data cubes to match the APEX angular resolution (26.″3). The red dots correspond to NGC 0768, NGC 7321, and UGC 12250, which have incomplete ACA spectral coverage (see Figure 4). The green arrows are UGC 08322 and UGC 12274, which are detected by ACA but not APEX (see Table 2). The figure shows good agreement between the ACA and APEX fluxes. However, fluxes measured by APEX are, on average, ∼20% brighter than in ACA, likely due to calibration differences. Note that a lack of a detection by ACA in a 26″ beam does not imply the source is not detected by ACA; for interferometric data, convolution results in removing visibilities in long baselines (and thus collecting area and sensitivity).