Snapshot residual image statistics after the two-components’ self-calibration. Each row refers to one epoch (see Sect. 2 for details). Columns from left to right: dynamic range of the experiments (4 s cadence); rms of the experiments (4 s cadence); zoom to the area where more promising excursions have been detected using 4 s cadence; dynamic range (12 s cadence). In all panels, antenna elevations are shown in red.