Radial velocity time series of EV Lac (J22468+443). The radial velocities and internal uncertainties σ_{internal, i} are displayed in red. The blue error bars indicate the quadratic sum of the internal uncertainties and the RV jitter $\sqrt{{\sigma }_{\mathrm{internal},i}^2+{\sigma }_{\mathrm{jitter}}^2}$. The panel to the right shows a histogram of the RV measurements. The radial velocities are centered on their mean (μ = 0 m s⁻¹).