Correlation plots for the radio and X-ray intensities (left panel) and for the radio intensity and the Compton-y parameter (right panel). We study the (1.2 Mpc)² area shown in Fig. 1. The data points with error bars show the mean values and the standard deviation in the resampled pixels with 64 kpc resolution. The orange points have the 140 MHz intensity greater than the current sensitivity of LOFAR, I₁₄₀ ≥ 0.2 μJy/arcsec² (dashed line). The red lines show the best-fit correlations for the orange points calculated with the BCES Y|X (solid line) and bisector (dotted line) methods.