#x (kpc)   v (km/s)  v_err (km/s)
-11.74 -150.78   11.69
 -8.04 -136.26   12.14
 -7.29 -136.87   10.28
 -6.53 -127.19   15.38
 -5.77 -107.32   14.02
 -5.02 -103.63   13.73
 -4.26 -108.43   13.67
 -3.08  -86.36   12.46
 -1.99  -76.89   10.42
 -1.24   -5.82   18.71
 -0.48   -6.05   22.86
  0.66   55.48   13.44
  1.79   50.66   12.38
  2.54   33.25   14.96
  3.30   70.55   11.41
  4.06   98.45   10.29
  4.81   93.69   17.09
  5.57  108.74   13.92
  6.32   96.85   18.27
  7.08  118.44   19.06
  7.84  139.24   13.42
  8.59  162.78   17.95
  9.35  147.42   22.13
 11.13   95.86   26.93