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<HEAD>

    <TITLE>JHU/APL Auroral Oval Boundary</TITLE>

    <META NAME="Copyright" CONTENT="Copyright 2000 Johns Hopkins University Applied Physics Laboratory"/>

    <META NAME="Date" CONTENT="21 February 2000"/>

    <META NAME="Author" CONTENT="J. P. Skura"/>


  

  

    

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<H2>Current OVATION Boundary Information</H2><BR>
<PRE>
18 Apr 1997 22:55:20 yearsecs   9327320
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -60.99   85.57  -57.41   38.03
    1.00  -61.62  100.57  -54.92   52.12
    2.00  -62.25  115.57  -52.71   65.26
    3.00  -62.88  130.57  -51.00   77.34
    4.00  -62.17  145.57  -48.55   87.87
    5.00  -63.31  160.57  -48.56   99.20
    6.00  -64.12  175.57  -48.66  110.01
    7.00  -64.46  190.57  -48.79  120.40
    8.00  -65.04  205.57  -49.76  130.56
    9.00  -64.40  220.57  -50.16  140.89
   10.00  -64.03  235.57  -51.35  151.47
   11.00  -63.79  250.57  -53.07  162.31
   12.00  -63.83  265.57  -55.40  173.29
   13.00  -64.09  280.57  -58.29  184.33
   14.00  -64.57  295.57  -61.80  195.37
   15.00  -65.28  310.57  -65.94  206.60
   16.00  -66.21  325.57  -70.53  218.69
   17.00  -67.36  340.57  -75.28  232.91
   18.00  -67.35  355.57  -78.65  256.29
   19.00  -66.70   10.57  -79.96  292.00
   20.00  -65.22   25.57  -77.38  328.92
   21.00  -64.11   40.57  -72.83  354.46
   22.00  -62.70   55.57  -67.04   11.27
   23.00  -61.54   70.57  -61.63   24.84
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -69.36   85.57  -66.53   51.94
    1.00  -70.22  100.57  -63.87   64.39
    2.00  -71.18  115.57  -61.84   75.65
    3.00  -72.05  130.57  -60.35   85.76
    4.00  -74.49  145.57  -61.04   96.69
    5.00  -75.64  160.57  -61.01  105.56
    6.00  -75.29  175.57  -59.93  113.26
    7.00  -74.52  190.57  -58.88  121.16
    8.00  -75.25  205.57  -59.84  129.17
    9.00  -75.04  220.57  -60.34  137.22
   10.00  -74.84  235.57  -61.33  145.40
   11.00  -74.67  250.57  -62.80  153.68
   12.00  -74.39  265.57  -64.60  162.23
   13.00  -74.36  280.57  -67.00  170.52
   14.00  -74.41  295.57  -69.86  178.63
   15.00  -73.96  310.57  -72.76  188.21
   16.00  -73.88  325.57  -76.23  197.65
   17.00  -72.50  340.57  -79.18  215.15
   18.00  -72.35  355.57  -82.90  235.11
   19.00  -73.03   10.57  -86.61  273.37
   20.00  -72.49   25.57  -85.28  348.59
   21.00  -70.71   40.57  -79.99   11.63
   22.00  -70.32   55.57  -75.43   28.66
   23.00  -69.17   70.57  -70.21   39.37
</PRE>


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