Radial velocity measurements during Runs 2012, 2013, and 2014 (black points, from top to bottom), and their circular Keplerian + RM fit for a null semi-amplitude (red line) and its 3σ upper limit (blue line). The Keplerian fit was performed on all measurements outside of the transit, and yields a total dispersion on the residuals of 0.21 and 0.28 km s^-1, respectively. Variations in the asymmetric continuum of the CCFs (Fig. 4) may cause the apparent differences in systemic velocities between the three runs. The RM model was adjusted to dataset 2012 only, but is consistent with dataset 2013. The two anomalous measurements in Run 2013 are the most redshifted RV values near ingress (vertical dashed lines show the times of mid-transit, first, and fourth contacts).