Examples of spectra extraction for two galaxies with bad (top) and good (bottom) quality of the [CII] data. For both galaxies: Left panel shows [CII] spectra obtained for each spaxel of the PACS data cube (with the pair numbers in the top left of each plot associated with the corresponding position on the PACS footprint); in the right panel, the solid lines represent the spectra from the central spaxel (orange) and from the inner 3 × 3 (green) and 5 × 5 (teal) spaxel grids, while the shaded areas show their uncertainties. For Haro11, the right panel reports the continuum-subtracted spectra, while the dashed black line displays the single component Gaussian fit on the 3 × 3 inner spectrum.