Examples of some of the [C ii] ISO/LWS spectra and SEDs obtained in this work. The vertical dashed lines mark the integration interval to derive the FIR continuum, 42.5 μm and 122.5μm (Dale & Helou 2002). a), b) The first row shows the [C ii] spectrum and the SED of the inter-arm position S32. c, d) The second row shows the spectrum and SED from the nucleus of M 33. e), f) The third row shows observations of the H ii region BCLMP 302 (N49). g), h) Finally, the last row shows the spectrum and the SED from one of the positions (N61) in the outer, southern N2 region. The SEDs show MIPS 24 μm and 70 μm, PACS 100 μm and 160 μm and SPIRE 250 μm, 350 μm and 500 μm data. In the [C ii] spectra, green lines show Gaussian fits to the spectra and blue lines show fitted baselines.