Extracted spectra of the [C I](³P₁–³P₀) line (left) and the [C I](³P₂–³P₁) and CO(7–6) lines (right). Both spectra are binned in steps of 26 km s⁻¹. The colored areas indicate that the velocity ranges corresponding to detected line emission as labeled, which were used to obtain the velocity-integrated fluxes. Blue and purple solid lines show the best-fit double Gaussians, whereas the red line in each panel shows the continuum level. The velocity offset in both panels is relative to the expected frequency of the [C I] lines at z = 4.0553.