Continuum-subtracted HST/STIS position-velocity diagrams of the flow from DG Tau, in the [S ii] λ6731 line and in slit positions from S1 to S7 (from southeast to northwest), offset by 0.07 arcsec across the jet width. The colored contours are from 1.1 × 10^-15 erg s^-1 arcsec^-2 cm^-2 Å^-1 (equivalent to 3σ), with a ratio of 2^2/5. The vertical line marks zero velocity with respect to the star. The horizontal lines mark the position of the star and of previously identified knots. Adapted from MA14.