#x (kpc)   v (km/s)  v_err (km/s)
 -5.70   88.41   12.80
 -3.69   68.09   10.29
 -2.76   36.52   10.29
 -2.13   31.14   10.29
 -1.49   35.75   10.29
 -0.85   15.51   10.29
 -0.22  -21.18   10.29
  0.42  -29.51   10.29
  1.06  -48.71   10.29
  1.69  -67.12   10.29
  2.33  -80.23   10.29
  2.97  -82.84   10.29
  3.60  -91.08   10.29
  4.24  -99.68   10.29
  4.88  -99.70   10.29
  6.07  -94.16   10.29
  8.28 -112.83   10.29