Results of the cross-correlation analysis of WASP-127 b. The results are shown for cross-correlation with a pure H₂O model (left column), with a pure CO model (middle column), and with a model containing both atmospheric species (right column). Top panels: results for the CCF for each orbital phase. The radial velocity of the planetary orbital motion is indicated with a white dashed line. Middle panels: K_p-v map, i.e. the CCF co-added using different values for K_p. The white dotted line indicates the value for K_p found in the literature. Bottom panels: cut through the K_p-v map at the literature value for K_p.