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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>
30 Jul 1997 23:57:12 yearsecs  18230232
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -64.56   70.81  -65.22   29.91
    1.00  -64.01   85.81  -60.88   42.59
    2.00  -65.01  100.81  -58.57   56.64
    3.00  -66.01  115.81  -56.61   69.37
    4.00  -65.79  130.81  -53.99   79.85
    5.00  -66.76  145.81  -53.25   90.80
    6.00  -66.86  160.81  -52.15  100.87
    7.00  -66.62  175.81  -51.17  110.78
    8.00  -67.16  190.81  -51.48  120.75
    9.00  -67.62  205.81  -52.29  130.44
   10.00  -67.09  220.81  -52.73  140.29
   11.00  -66.79  235.81  -53.92  150.36
   12.00  -66.76  250.81  -55.79  160.55
   13.00  -66.99  265.81  -58.25  170.76
   14.00  -67.45  280.81  -61.29  180.81
   15.00  -68.14  295.81  -64.96  190.58
   16.00  -69.06  310.81  -69.20  200.11
   17.00  -70.03  325.81  -73.69  210.12
   18.00  -69.83  340.81  -77.36  225.96
   19.00  -69.28  355.81  -80.46  250.75
   20.00  -68.19   10.81  -81.57  290.75
   21.00  -67.11   25.81  -79.52  331.53
   22.00  -66.11   40.81  -75.12  358.29
   23.00  -65.23   55.81  -70.03   15.89
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -73.08   70.81  -73.56   50.84
    1.00  -74.12   85.81  -70.64   63.41
    2.00  -75.11  100.81  -68.20   74.09
    3.00  -78.36  115.81  -68.28   88.04
    4.00  -80.48  130.81  -68.20   98.03
    5.00  -80.93  145.81  -67.24  104.28
    6.00  -80.25  160.81  -65.59  109.33
    7.00  -79.41  175.81  -64.13  115.11
    8.00  -79.57  190.81  -64.05  121.74
    9.00  -79.11  205.81  -63.75  128.43
   10.00  -79.36  220.81  -64.59  134.99
   11.00  -79.13  235.81  -65.36  141.77
   12.00  -79.16  250.81  -66.76  148.26
   13.00  -78.93  265.81  -68.31  154.98
   14.00  -78.94  280.81  -70.41  161.03
   15.00  -78.63  295.81  -72.63  167.57
   16.00  -78.77  310.81  -75.39  172.11
   17.00  -78.24  325.81  -78.16  178.50
   18.00  -78.50  340.81  -81.31  178.85
   19.00  -78.41  355.81  -84.42  175.04
   20.00  -77.65   10.81  -87.60  155.58
   21.00  -75.98   25.81  -87.36   43.61
   22.00  -74.54   40.81  -82.74   35.32
   23.00  -73.42   55.81  -77.87   41.19
</PRE>


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