Comparison for the four stars of the observed (black line) and computed (red line) spectra in the region of the Xe ii line with wavelength 446.2190 nm according to the NIST database (left panel) and with wavelength 446.2090 nm according to this paper (right panel). The line identification can be decoded as follows: for the first line, 898 last 3 digits of wavelength 446.0898 nm; 26 atomic number of iron; .01 charge/100; i.e., 26.01 identifies the line as Fe ii; 91 070 is the energy of the lower level in cm^-1; 919 is the residual central intensity in per mil. The Xe ii line is identified by 54.01.