B-mode gaps (or duplicate numbers) in sounding sequence:
(The soundings numbered below exist, gaps are in between),
   149 to    236
   327 to    352
   535 to    629
   717 to    719
   958 to    966
  1523 to   1525
  1525 to   1527
  1608 to   1639
  1947 to   1949
  2175 to   2179
  2946 to   2948