PACS spectroscopy SED of well-pointed, non-extended sources, after applying PSFLC and semi-extended 3 × 3 correction (PSFLC-3 × 3). PACS data is colour-coded according to the spectral region covered by each subrange, as follows: ~50−70 μm (yellow), ~70–100 μm (red), ~100−145 μm (green), and ~145−200 μm (turquoise). IRAS (red points) and AKARI (blue points) photometric data and ISO (black) spectroscopic data are also displayed when available. We do not show those observations pointed to a specific region in the case of very extended sources suchas rims or knots.