#x (kpc)   v (km/s)  v_err (km/s)
 -4.25   52.97   10.32
 -2.58   40.49   10.32
 -1.95   31.83   10.32
 -1.31   28.25   10.32
 -0.68   14.82   10.32
 -0.05    6.92   10.32
  0.59  -12.86   10.32
  1.22  -21.36   10.32
  1.85  -38.46   10.32
  2.49  -42.24   10.32
  3.12  -34.77   10.32
  3.75  -43.01   10.32
  4.38  -51.61   10.32
  5.02  -56.14   10.32
  5.65  -67.45   10.32
  6.56  -62.03   10.32
  8.07  -53.38   10.32