[C II] surface density of CRISTAL-05 and its subregions as a function of the SFR surface density. The global measurement (aperture of 1.5″) is represented as a red hexagon, and the subregions as red circles, labeled as shown in the left panel Figure 12. We also display relations of local (navy dashed line, De Looze et al. 2014) and high-redshift galaxies (z > 4), as cyan dot-dashed (Carniani et al. 2018) and navy dashed (Schaerer et al. 2020) lines. For the latter, we convert the L_[CII] – SFR correlation to the surface density, assuming an average area of 8 kpc⁻².