Left panels: MATISSEG results for cool random spectra of S/N ~ 20 at the nominal high resolution (HR) compared to those for the lower resolution (LR) spectra of the same stars (and same S/N value). Right panels: normalized distribution of residuals for the high-resolution spectra (red curve) and for the low-resolution ones (black curve). The ratio of the 68% quantile values of both distributions is given for each stellar parameter.
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