Soundings in directory JAN2013 of type *.i?? or *.?i?
 no.    File        Date    start    End (UT)
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Soundings in directory FEB2013 of type *.i?? or *.?i?
 no.    File        Date    start    End (UT)
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Soundings in directory MAR2013 of type *.i?? or *.?i?
 no.    File        Date    start    End (UT)
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