function [iB1, iB2, iB3] = find_cmp_ind( arr );
%[iB1, iB2, iB3] = find_cmp_ind( arr );

iB1 = find( (arr(:,12) == 6) & (arr(:,13) == 26) );
iB2 = find( (arr(:,12) == 3) & (arr(:,13) == 28) );
iB3 = find( (arr(:,12) == 7) & (arr(:,13) == 29) );
