Comparison of the redshift-space to real space power spectrum monopoles ratio between the COVMOS and DEMNUni_cov experiments. Left: ratio between averaged monopoles with and without RSD contribution in black for DEMNUni_cov and in red for COVMOS, for the five different redshifts. Right: Ratio between the previous quantities in black solid line with error bars in shaded grey, jointly accounting for estimated variance on DEMNUni_cov and COVMOS in both real and redshift-space.