Examples of data plots at three different points in the analysis. (a) Top panel: exposures are stacked along the vertical axis in time (where orbital phase ϕ = 1.0 is the middle of the primary eclipse). The dotted white lines indicate before and after the transit. (b) Middle panel: K_p − υ_sys detection map, where all values have been shifted into the planetary rest frame. The white dotted lines indicate rest frame system velocity (υ_sys = 0 km s⁻¹) and the semi-amplitude of the radial velocity of the planet (K_p = 126 km s⁻¹). (c) Bottom panel: example of what the cross-correlation function looks like at K_p = 126 km s⁻¹, i.e. at the horizontal white line from (b).