B-mode gaps (or duplicate numbers) in sounding sequence: (The soundings numbered below exist, gaps are in between), 682443 to 682445 682445 to 682447 682447 to 682449 682449 to 682451 682451 to 682453 682453 to 682455 682455 to 682457 682457 to 682459 682459 to 682461 682461 to 682463 682463 to 682465 682465 to 682467 682467 to 682469 682469 to 682471 682471 to 682473 682473 to 682475 682475 to 682477 682477 to 682479 682479 to 682481 682481 to 682483 682483 to 682485 682485 to 682487 682487 to 682489 682489 to 682491 682491 to 682493 682731 to 682733 682733 to 682735 682753 to 682755 682794 to 682796 682808 to 682810 682816 to 682818 683041 to 683043 683043 to 683045 683045 to 683047 683047 to 683049 683211 to 683213 683317 to 683319 683935 to 683937 683941 to 683943 684492 to 684494 684690 to 684692 684692 to 684694 684694 to 684696 684696 to 684698 684698 to 684700 684700 to 684702 684702 to 684704 684704 to 684706 684706 to 684708 684708 to 684710 684710 to 684712 684712 to 684714 684714 to 684716 684716 to 684718 684718 to 684720 684720 to 684722 684722 to 684724 684724 to 684726 684726 to 684728 684728 to 684730 684730 to 684732 684732 to 684734 684734 to 684736 684736 to 684738 685020 to 685022 685022 to 685024 685024 to 685026 685026 to 685028 685028 to 685051