[Oi] 63, [Oiii] 88, [Nii] 122, [Oi] 145, and [Cii] 158 μm line spectra (top to bottom) found in locations A-D (see Fig. 2) representative of the central, mid-plane, off-plane and outer regions (left to right). We plot the rms after 5σ clipping (black line) and corresponding ±1σ values in each bin (grey area), and our best fit Gaussian profile and baseline (solid and dashed red lines).