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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>
19 Apr 1997 22:43:22 yearsecs   9413002
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -61.21   88.40  -57.04   40.88
    1.00  -61.83  103.40  -54.57   54.78
    2.00  -62.45  118.40  -52.42   67.69
    3.00  -63.06  133.40  -50.81   79.56
    4.00  -62.41  148.40  -48.54   90.05
    5.00  -63.57  163.40  -48.66  101.30
    6.00  -64.32  178.40  -48.78  112.01
    7.00  -64.60  193.40  -48.96  122.33
    8.00  -65.20  208.40  -50.06  132.45
    9.00  -64.56  223.40  -50.56  142.79
   10.00  -64.18  238.40  -51.82  153.40
   11.00  -63.95  253.40  -53.62  164.26
   12.00  -63.99  268.40  -56.02  175.27
   13.00  -64.25  283.40  -58.98  186.33
   14.00  -64.73  298.40  -62.57  197.40
   15.00  -65.44  313.40  -66.78  208.78
   16.00  -66.37  328.40  -71.39  221.25
   17.00  -67.52  343.40  -76.10  236.23
   18.00  -67.52  358.40  -79.35  261.45
   19.00  -66.86   13.40  -80.21  299.33
   20.00  -65.40   28.40  -77.11  335.05
   21.00  -64.29   43.40  -72.30  358.81
   22.00  -62.91   58.40  -66.53   14.67
   23.00  -61.74   73.40  -61.19   27.84
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -71.34   88.40  -67.68   58.22
    1.00  -72.22  103.40  -65.14   69.75
    2.00  -73.15  118.40  -63.24   80.15
    3.00  -74.01  133.40  -61.91   89.62
    4.00  -76.32  148.40  -62.59   99.92
    5.00  -77.39  163.40  -62.59  108.18
    6.00  -77.08  178.40  -61.67  115.36
    7.00  -76.46  193.40  -60.85  122.76
    8.00  -77.20  208.40  -61.89  130.17
    9.00  -77.06  223.40  -62.49  137.61
   10.00  -76.95  238.40  -63.56  145.10
   11.00  -76.73  253.40  -64.95  152.76
   12.00  -76.41  268.40  -66.67  160.64
   13.00  -76.30  283.40  -68.97  168.18
   14.00  -76.31  298.40  -71.71  175.32
   15.00  -75.86  313.40  -74.53  183.80
   16.00  -75.73  328.40  -77.85  191.59
   17.00  -74.40  343.40  -80.95  207.60
   18.00  -74.21  358.40  -84.75  224.45
   19.00  -74.79   13.40  -88.69  268.39
   20.00  -74.26   28.40  -86.03   15.19
   21.00  -72.55   43.40  -80.74   24.67
   22.00  -72.12   58.40  -76.18   37.86
   23.00  -71.16   73.40  -71.30   46.89
</PRE>


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