B-mode gaps (or duplicate numbers) in sounding sequence: (The soundings numbered below exist, gaps are in between), 596933 to 596935 597190 to 597192 597192 to 597194 597251 to 597253 597253 to 597255 597297 to 597299 597335 to 597337 597390 to 597392 597983 to 597985 597985 to 597987 597987 to 597989 597989 to 597991 597991 to 597993 597993 to 597995 597995 to 597997 597997 to 597999 597999 to 598001 598001 to 598004 598004 to 598006 598006 to 598008 598008 to 598010 598010 to 598012 598012 to 598014 598014 to 598016 598016 to 598018 598018 to 598020 598020 to 598022 598022 to 598024 598024 to 598026 598026 to 598029 598029 to 598031 598031 to 598033 598033 to 598035 598035 to 598037 598037 to 598039 598039 to 598041 599682 to 599684 599684 to 599686 599690 to 599692 599734 to 599736 599754 to 599756 599758 to 599760 599782 to 599784 599784 to 599786 599788 to 599790 599818 to 599820 599859 to 599861 599871 to 599873 599899 to 599901 600004 to 600006 600088 to 600090 600106 to 600108 600112 to 600114 600120 to 600122 600220 to 600222 600316 to 600318 600350 to 600352 600469 to 600471 600513 to 600515 600726 to 600728 600734 to 600736 600798 to 600800 600811 to 600813 600833 to 600835 600891 to 600893 600911 to 600913 600933 to 600935 601002 to 601004 601042 to 601044