#x (kpc)   v (km/s)  v_err (km/s)
 -9.64   53.57    9.12
 -7.25   57.18    9.12
 -6.11   48.67    9.12
 -5.33   65.14    9.12
 -4.55   51.70    9.12
 -3.77   50.88    9.12
 -2.99   53.99    9.12
 -2.21   42.56    9.12
 -1.43   27.93    9.12
 -0.65   24.19    9.12
  0.13   33.75    9.12
  0.91   15.43    9.12
  1.69  -13.78    9.12
  2.47  -24.41    9.12
  3.25  -36.01    9.12
  4.03  -54.33    9.12
  4.81  -49.70    9.12
  5.59  -50.50    9.12
  6.37  -51.53    9.12
  7.49  -50.95    9.12
  8.70  -77.52    9.12