CRIRES spectra corresponding to phase 0.0 are plotted over the four detectors D1–D4. The blue vertical features indicate the telluric lines as identified with the Molecfit ESO sky modeling tool. The atmospheric line indicated on D1 by a red region is blended between phase 0.6–1.0. The NaI doublet appears in D3: the first component (2206.242 nm, red region) is blended, while the second (2208.969 nm, green region) is analyzed in this paper.