[CLEAN\]UV_STAT TAPER [Start [Step]]
For TAPER, beam sizes and noise level (in flux and brightness) will be
computed for 9 different tapers (from Start to Start*Step^9). Default
value for Step is sqrt(2), Default value for Start is 50 m. Weighting
mode, UV cell size and "robust" parameter are taken from variable
MAP_UVCELL and MAP_ROBUST (i.e. one can combine Robust weighting and Ta-
pering).