Soundings in directory NOV1997B of type *.i??
 no.    File        Date    start    End (UT)
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Soundings in directory NOV1997C of type *.i??
 no.    File        Date    start    End (UT)
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   1 TR039054.I_G 19971121 08:40:35-08:41:16
   2 TR039055.I_G 19971125 08:52:12-08:52:53
Soundings in directory DEC1997A of type *.i??
 no.    File        Date    start    End (UT)
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