CCFs for ¹²CO, ¹³CO, ${\mathrm{H}}_2^{16}\mathrm{O}$, ${\mathrm{H}}_2^{18}\mathrm{O}$, HF, and Ca abundances. The CCFs were calculated for each order–detector pair and summed over all orders and detectors, after which they were converted to S/Ns by dividing by the standard deviation of the CCFs in the range |v_rad| > 100 km s⁻¹. The different colours represent the different targets, J0835, J0501, and J0500. The peaks at v_rad = 0 km s⁻¹ are a result of the cross-correlation being performed on the observed spectrum centred in its rest frame. We indicate the peak S/N values in units of σ for each species and BD in the upper-right corner.