Entire K_p − V_res diagram for detected species in TOI-1518 b dataset. The white cross indicates the expected location of the planetary signal, which assumes a static atmosphere. Deviations from the white cross could be the significance of wind, circulations, or chemical asymmetries on TOI-1518 b. A clear signal is observed with a white blob – sometimes shifted – near the white cross in each diagram. The signal observed at K_p around 100 km s⁻¹ and V_res around −60 km s⁻¹ in some diagrams is due to the Doppler shadow and is not of planetary origin. We note that the Ca+ K_p − V_res map was computed without the use of PCA (see discussion).