B-mode gaps (or duplicate numbers) in sounding sequence:
(The soundings numbered below exist, gaps are in between),
 26337 to  26339
 26662 to  26664
 26817 to  26819
 27553 to  27555
 28000 to  28002
 28107 to  28109
 28456 to  28458
 29043 to  29045
 29045 to  29048
 29048 to  29050
 29050 to  29052
 29055 to  29057
 29062 to  29064
 29064 to  29066
 29081 to  29083
 29091 to  29093
 29094 to  29096
 29112 to  29114
 29233 to  29235
 29289 to  29291
 29705 to  29707
 30267 to  30269
 30287 to  30289
 30347 to  30349
 30367 to  30369
 30387 to  30390
 30407 to  30410
 30427 to  30430
 30448 to  30450
 30467 to  30470
 30488 to  30490
 30508 to  30510
 30528 to  30530
 30749 to  30751
 30769 to  30771
 30788 to  30791
 30808 to  30811
 30829 to  30831
 30848 to  30851
 30868 to  30871
 30888 to  30896
 30913 to  30971
 31662 to  31664
 32900 to  32902
 32917 to  32919
 34382 to  34385
 34409 to  34411
 34891 to  34893
 35499 to  35501
 35502 to  35505
 35514 to  35516
 35546 to  35549
 35549 to  35553
 35553 to  35556
 35556 to  35558
 35558 to  35562
 35564 to  35566
 35980 to  35982
 36117 to  36119
 37213 to  37215
 38073 to  38075
 38132 to  38134
 39839 to  39841
 40569 to  40571
 40901 to  40903
 40903 to  40905
 40921 to  40973
 41349 to  41351