Example of radial velocity curves fitted to the data of stars 199, 257 and 728. The first two are RRab while the last one (bottom panel) is a type c star. These stars were observed with different telescopes. The consistency of the data is reassuring that no large systematic offsets are present in the data. Solid circles represent velocities measured in Magellan runs; asterisks, open square and solid square correspond to different WIYN setups (red, blue and green, respectively); triangle is a measurement from the ESO 3.6 m telescope.