Integrated intensity between 5.3 and 6.5 km s⁻¹ of different molecular transitions (colours) compared with that of C₆H₅CN (black contours; first contour and step are 0.75 mK km s⁻¹). For each molecular transition the integrated intensity has been normalised to the maximum value within the area covered by the map. The colour scale (bottom right) is the same for all molecular transitions. The molecule, transition, and maximum intensity (shown in brackets) are indicated in the bottom right corner of each panel. The black dot corresponds to the centre of the map.