Test on resolution power: two identical Gaussian functions with FWHM = 10 arcsec are moved closer and closer at 20 arcsec (left column), 14 arcsec (middle column), 10 arcsec (right column), reconstructed by EM and CLEAN and compared to ground truth. The results for all three statistics levels illustrate the reconstructed intensity profiles along the axis passing through the source centers, averaged over 10 random data realizations. The corresponding confidence strips are also reproduced.