#x (kpc)   v (km/s)  v_err (km/s)
-12.14 -117.98   15.15
-10.25 -149.68    7.61
 -8.93 -139.84    7.61
 -8.02 -141.11    7.61
 -7.38 -146.62    7.61
 -6.74 -136.40    7.61
 -6.10 -136.18    7.61
 -5.46 -130.98    7.61
 -4.83 -139.04    7.61
 -4.19 -129.20    7.61
 -3.55 -124.20    7.61
 -2.91 -128.02    7.61
 -2.27 -112.54    7.61
 -1.63 -102.44    7.61
 -1.00  -76.03    7.61
 -0.36  -53.09    7.61
  0.28   -4.42    7.61
  0.92   36.65    7.61
  1.56   62.39    7.61
  2.20   77.93    7.61
  2.83   97.65    7.61
  3.47  107.98    7.61
  4.11  122.85    7.61
  4.75  126.23    7.61
  5.39  134.64    7.61
  6.03  137.28    7.61
  6.66  139.93    7.61
  7.62  145.09    7.61
  8.88  165.80    9.02