norb: nrec:UTC date:thhmmssmss
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    176     19 19970528 .015230000
    177     25 19970529 .023430000
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    177     37 19970531 .031030000
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    186    312 19970702 .001200000
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    186    338 19970704 .000000000
    186    338 19970704 .000000000