Top: cumulative absorption column density (dot-dashed line) together with the ¹²CO and HI contributions as a function of the radial velocity integrated on a 0.1° box region centered on the pulsar. Bottom: corresponding ¹²CO and HI spectra at the position of the pulsar. The Vela molecular ridge, centered at V_LSR ~ 5 km s^-1, is the main ¹²CO structure along the pulsar’s line of sight.