Notes. Velocities are expressed in the BSR frame in units of km s⁻¹. They correspond to the wavelength shifts of the observed molecular lines relative to the rest values given by Hobbs et al. (2009) and reported in the second line. For each LOS, the arithmetic mean of the velocities gives the average radial velocity ${\overline{v}}_{\text{obs}}$. Numbers in parentheses are 1σ-errors in units of the last digit quoted. They do not take the spectrometric accuracy of PEPSI into account.

^(a)Derived using the velocity components of Na I D1 and D2 at 5896.33 and 5890.36 Å, respectively, and that of Ca II K at 3933.93 Å (Table A.2). We did not include the relevant component of Ca II H at 3968.75 Å.