YYMMDD TEL     FILENAME   NZ EXPTIME SUM   MJD   SEC
180101  c2 22663757.fts   97 26.3926   1 58119 28818
180101  c2 22663765.fts    0 23.0479   1 58119 33139
180113  c2 22665242.fts    0 23.0479   1 58131 40336
180119  c2 22666036.fts    0 25.5962   1 58137 77059