Left panel: position-velocity diagram of a representative location in the eastern part and column density normalized by spin temperature (bottom panel) for the same velocity range as in the right panel. Right panel: position-velocity diagram of 3C 293 at the location of the VLBI core (top panel) and column density normalized by spin temperature separated into systemic and outflowing H I gas (bottom two panels). The dashed lines in the top two panels correspond to the size of the synthesized beam. The dashed lines in the bottom panels correspond to the location of the slice for the position-velocity diagram.