Left: dereddened CMD (black dots) with the search region (pink solid-line rectangle) for the cross-correlation and the template main sequence-shaped function (green solid line) at the position of maximum density (peak of the cross-correlation). Right: binned diagram representing the weighted density of stars resulting from the cross-correlation process. The density in each bin corresponds to the integral of the template main sequence-shaped function with top left corner in the position of the bin.