CCFs for the and bands as observed with ESPRESSO and GIANO, respectively. We arbitrarily offset the CCFs to place their continuum at 0. Solid lines of different colours from purple to light green show the CCF obtained for a grey aerosol deck located at the pressure indicated in the colour-matched label. A red dashed line shows the best Gaussian fit to the p_c = 0.01 mbar case. Red crosses indicate the best fit at the sampling corresponding to the simulation, finer for ESPRESSO, coarser for GIANO.