ation of the backscatter for the four beams in</span>
0021     <span class="comment">% one bin in one ensemble</span>
0022     back=A(zi).Wat.backscatter;
0023     back(back&gt;=255) = NaN;
0024     A(zi).Clean.backstandf = std(back,0,3);
0025 
0026     <span class="comment">% Remove backscatter intensities &gt;= 255 (bad value) and backscatter</span>
0027     <span class="comment">% intensities with a standard deviation greater than 10 (mainly climbing</span>
0028     <span class="comment">% walls)</span>
