#x (kpc)   v (km/s)  v_err (km/s)
 -8.24   63.15    9.11
 -6.14   64.69    9.16
 -5.39   78.65    9.66
 -4.64   48.52    9.11
 -3.90   38.70    9.11
 -3.15   46.18    9.11
 -2.06   28.47    9.11
 -0.90   31.36   18.98
  0.61   77.08   14.88
  2.42   23.60   25.59
  4.01  -53.84   18.50
  5.94  -76.26   13.80
  8.43  -98.68   18.72
 11.02 -110.71   19.55