B-mode gaps (or duplicate numbers) in sounding sequence: (The soundings numbered below exist, gaps are in between), 635191 to 635193 635351 to 635353 635582 to 635584 635584 to 635586 635590 to 635592 635870 to 635872 635872 to 635874 635874 to 635876 635876 to 635878 635882 to 635884 635884 to 635886 635890 to 635892 635892 to 635894 635894 to 635896 635904 to 635906 635910 to 635912 635930 to 635932 635946 to 635948 635948 to 635950 635952 to 635954 635954 to 635956 635964 to 635966 635968 to 635970 635974 to 635976 635984 to 635986 636172 to 636174 636175 to 636177 636177 to 636179 636181 to 636183 636183 to 636185 636185 to 636187 636350 to 636352 636354 to 636356 636614 to 636616 636618 to 636620 636901 to 636903