#x (kpc)   v (km/s)  v_err (km/s)
 -7.73  103.14   10.01
 -5.60   71.64   10.01
 -4.34   49.97   10.01
 -3.41   49.76   10.01
 -2.77   47.71   10.01
 -2.14   35.18   10.01
 -1.50   26.82   10.01
 -0.87   15.43   10.01
 -0.24   10.15   10.01
  0.40    0.16   10.01
  1.03   -6.93   10.01
  1.67  -19.06   10.01
  2.30  -25.34   10.01
  2.93  -39.57   10.01
  3.57  -50.21   10.01
  4.20  -59.66   10.01
  4.84  -65.48   10.01
  5.47  -78.13   10.01
  6.10  -79.41   10.01
  6.74  -89.40   10.01
  7.37  -95.63   10.01
  8.01 -100.42   10.01
  8.64 -106.29   10.01
  9.27 -111.80   10.01
  9.91 -110.33   10.01
 10.54 -124.47   10.01