Table 1: The systemic velocity and distance to the spiral arms along the line of sight toward Wd 1 determined with the Spiral arm model in Fig. 2 and the rotation curve in Fig. 1.

Spiral Arm	[km s-1]	[kpc]
Sagittarius I	-17	1.5
Scutum-Crux I	-52	3.5
Norma I	-89	4.9
Norma II	-35	11.5
Scutum-Crux II	+6	15.0
Sagittarius II	+26	18.4

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