P14, P15, P18 and P20 (see Figure \[fig3\]). However, the core region strongly dominates such fainter contributions. The positions of the extracted spectra, the extraction radius used, the measured mean radial velocity, and the H$\alpha$ velocity width (FWHM) (after correction for the instrumental resolution) of each cloud are listed in Table \[table1\], and the corresponding positions are shown on the HST ACS H$\alpha$ + \[O III\] image in Figure \[fig2\] [ and each cloud with its spectral extraction region is shown in an $8\times8$arc sec. postage stamp image in Figure \[fig3\]]{}. A spectrum of the bright cloudlet P14 is shown in Figure \[fig4\] to indicate the quality of the data. Note that the typical velocity FWHM of these clouds in only $\sim 180$km/s, which is fairly indicative of the mean shock velocity in those clouds [Fig.6 in @Dopita12].

The mean Heliocentric radial velocity of all 20 clouds is +246km/s, and the mean Heliocentric radial velocity of the photoionised halo of N132D is found to be +261km/s, a difference which lies within the expected statistical error caused by sampling of the cloud shock velocities projected along the lines of sight within the random cloud positions inside the SNR. These figures can 