CO(1-0) spectra corresponding to the CO(2-1) detections from Melchior & Combes (2013, hereafter MC13). The PdB IRAM interferometric data is reprojected on the grid of the data cube obtained with HERA on IRAM 30 m telescope as described in MC13. We show the spectra in the 12 arcsec beams shown in the Fig. 11. A vertical line indicates the systemic velocity. In each panel, we show the best Gaussian fit used to integrate the CO line, whose results are listed in Table 5.