Intensity plots of the targets listed in Table A.1 for which there is a hint of possible emission but not enough to claim a detection. The colour bar values are in mJy beam⁻¹, with negative values shown in blue. In the bottom right, a line that corresponds to 1^′ is shown, while in the bottom left the cross-section of the synthetic beam’s FWHM can be seen. Contours of the most interesting features from the WISE 22 m counterpart are overlaid with blue lines. Black contours are radio emission at levels [−10, −5, 5, 10, 20, 40, 80, 160] σ, with negative contours using a dashed line.