function M = rm_dots(section);

count=0;
n=length( find( section(1,:)>100 ) );
n1=length( find( section(3,:)>100 ) );
if( n+n1 > 5 )
  count=count+1;
end

n=length( find( section(:,1)>100 ) );
n1=length( find( section(:,3)>100 ) );
if( n+n1 > 5 )
  count=count+1;
end

n=length( find( section(20,:)>100 ) );
n1=length( find( section(18,:)>100 ) );
if( n+n1 > 5 )
  count=count+1;
end

n=length( find( section(:,20)>100 ) );
n1=length( find( section(:,18)>100 ) );
if( n+n1 > 5 )
  count=count+1;
end


if( count > 1 )
  M=section;
else
  M=zeros(size(section));
end