Same as Figure 8 but for the Na I doublet. In light green we mark the regions affected by telluric residuals. The residual observed in the left panel (2020-05-31) corresponds to a telluric Na I emission line which has not been completely corrected in the sky subtraction, probably due to the different efficiency of the two fibers. The residual observed in the right panel (2020-07-29) is produced by two H₂ O absorption lines that are not detected by SELENITE in the telluric correction.