B-mode gaps (or duplicate numbers) in sounding sequence:
(The soundings numbered below exist, gaps are in between),
676919 to 676921
677015 to 677017
677101 to 677103
677131 to 677133
677243 to 677245
677251 to 677253
677313 to 677315
678116 to 678118
678881 to 678883
679169 to 679171