#x (kpc)   v (km/s)  v_err (km/s)
 -8.70  135.11   22.29
 -7.51  110.38   13.15
 -6.44  106.46   16.31
 -5.28   90.37   11.19
 -4.19   43.54   14.85
 -3.43   56.39   12.42
 -2.68   60.80   16.71
 -1.93   29.92   11.15
 -1.18   27.98    9.09
 -0.43   11.64   10.67
  0.33   -3.28    9.09
  1.08  -19.03   11.37
  1.83  -24.34   15.00
  2.58  -38.11   10.80
  3.33  -44.85   10.62
  4.09  -67.56   12.31
  5.21  -53.85    9.09
  6.34  -55.48   11.22
  7.09  -77.36   10.45
  7.85  -85.35    9.09
  8.60  -89.96    9.09
  9.35  -90.20    9.09
 10.10 -107.65    9.09
 11.19 -111.07    9.09