B-mode gaps (or duplicate numbers) in sounding sequence: (The soundings numbered below exist, gaps are in between), 814626 to 814628 814856 to 814858 815036 to 815038 815528 to 815530 815530 to 815532 815532 to 815534 815534 to 815536 815536 to 815538 815538 to 815540 815540 to 815542 817139 to 817141 817295 to 817297 817313 to 817315 817315 to 817317 817438 to 817440 817442 to 817444 817445 to 817447 817447 to 817447 817577 to 817579 817635 to 817637 817702 to 817704 817976 to 817978 818222 to 818222 818222 to 818224 818314 to 818316 818608 to 818610 818618 to 818620 818772 to 818774 819130 to 819132 820399 to 820401 820417 to 820419 821591 to 821593 821715 to 821717 822787 to 822789 823513 to 823515 823866 to 823868 824817 to 824819 824819 to 824821 824891 to 824893 825025 to 825027 825027 to 825029 825321 to 825323 825331 to 825333 826576 to 826578 826626 to 826628 826798 to 826800 826979 to 826981 827510 to 827512 828046 to 828048 828186 to 828188 828568 to 828570 828822 to 828824 829020 to 829022 829237 to 829239 830123 to 830125 830125 to 830127 830127 to 830129 830129 to 830131 830131 to 830133 830133 to 830135 830135 to 830137 830137 to 830139 830139 to 830141 830141 to 830143 830143 to 830145 830147 to 830149 830253 to 830255 830685 to 830687 832471 to 832473 832709 to 832711 833639 to 833641 834333 to 834335 834597 to 834599 835031 to 835033