Radial profiles for galaxies NGC 3627 (top), NGC 4321 (middle), and NGC 6946 (bottom). Left: [C II], CO(2−1) and TIR intensities as well as surface densities of atomic and molecular gas and the SFR. Right: Intensity ratios for [C II]/TIR, [C II]/CO(2−1), and f_ν(100 μm)/f_ν(160 μm) as well as ratios of [C II] intensity and atomic or molecular gas surface density. Solid symbols show values with greater than 3σ significance, while hollow symbols show values with less than 3σ significance for [C II]. The shaded area represents ±1σ scatter for [C II] in each radial bin.