Left and center panels: Band 9 Stokes I images (contours) and differences between images from polarizers XX and YY (colors) for two parallactic angles (at the start and end of the observations). The contours are spaced logarithmically between 0.5% (dashed contour is at −0.5%) and 95% of the absolute Stokes I peak (i.e., the peak intensity among all observations). Right panel: difference in Stokes I between the first and last time bins (contours are linearly spaced at intervals of 0.2 times the maximum difference). The FWHM of the restoring beam is shown in the lower left side of each image (forced to 0.25 as in all images).