Analysis of the intrinsic scatter. Top panel: scatter plot for the extinction corrected log f_r and log f_W2, for low-z, high-z, low-zSpitzer, and high-zSpitzer. Bottom panel: standard deviation for binned fluxes in the bands r and W2, and the error of log r − W2 relations σ_{r W2 scatter}. The bins were calculated as equally distanced in log r space. The sizes of the symbols correspond to the log f_r flux values in each bin.