Same as Fig. 3 for one clump at J2000 coordinates 00^h 42^m 44.52^s and +41 °  16′ 10.1″ with SNR_peak = 5.4 and SNR_tot = 15.2. The size over the major and minor axis is twice as high as that obtained from the simulated clump, which suggests this clump is resolved. The velocity dispersion is more than twice the spectral resolution (2.2 km s⁻¹). There is also a good agreement between the extrapolated velocity dispersions, and those measured directly from the spectra, while the total flux is slightly higher for the extrapolation.