norb: nrec:UTC date:thhmmssmss
    497      2 20000926 .022445001
    497     11 20000927 .013045001
    498     24 20000928 .012530001
    498     35 20000929 .021115001
    498     44 20000930 .000345001
    498     53 20001001 .010645001
    499     66 20001002 .000000001
    499     75 20001003 .015145001
    499     83 20001004 .014115001
    499     90 20001005 .033215001
    500    102 20001006 .034200001
    500    107 20001007 .004630001
    500    113 20001008 .015700001
    501    121 20001009 .000515001
    501    131 20001010 .022015001
    501    142 20001011 .022230001
    501    151 20001012 .014200001
    502    165 20001013 .005507501
    502    177 20001014 .000815001
    502    194 20001015 .005400001
    502    209 20001016 .014200001
    502    215 20001016 .135615001