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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>
25 May 1997 22:07:07 yearsecs  12521227
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -65.72   94.77  -60.66   52.78
    1.00  -65.83  109.77  -57.58   64.68
    2.00  -66.70  124.77  -55.81   76.47
    3.00  -67.57  139.77  -54.70   87.36
    4.00  -67.26  154.77  -52.98   97.06
    5.00  -68.02  169.77  -52.83  107.23
    6.00  -68.11  184.77  -52.46  116.94
    7.00  -68.70  199.77  -53.14  126.51
    8.00  -70.13  214.77  -55.20  135.61
    9.00  -70.60  229.77  -56.83  144.61
   10.00  -69.96  244.77  -57.87  154.34
   11.00  -69.40  259.77  -59.42  164.44
   12.00  -69.15  274.77  -61.66  174.61
   13.00  -69.20  289.77  -64.57  184.70
   14.00  -69.52  304.77  -68.14  194.70
   15.00  -70.11  319.77  -72.23  204.83
   16.00  -70.70  334.77  -76.47  216.47
   17.00  -70.76  349.77  -80.30  234.32
   18.00  -70.85    4.77  -83.63  265.24
   19.00  -70.14   19.77  -83.63  318.84
   20.00  -69.24   34.77  -80.03  355.93
   21.00  -68.41   49.77  -75.20   16.21
   22.00  -67.80   64.77  -70.41   30.75
   23.00  -66.91   79.77  -65.52   42.34
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -71.78   94.77  -66.60   63.44
    1.00  -72.93  109.77  -64.55   74.83
    2.00  -73.74  124.77  -62.81   84.54
    3.00  -78.97  139.77  -65.93   99.08
    4.00  -80.79  154.77  -66.48  107.49
    5.00  -81.21  169.77  -66.15  113.69
    6.00  -80.62  184.77  -65.18  119.37
    7.00  -79.74  199.77  -64.27  125.64
    8.00  -79.87  214.77  -64.81  132.08
    9.00  -79.80  229.77  -65.55  138.53
   10.00  -79.59  244.77  -66.55  145.10
   11.00  -79.59  259.77  -68.10  151.29
   12.00  -79.78  274.77  -70.12  156.75
   13.00  -79.55  289.77  -72.16  162.68
   14.00  -79.33  304.77  -74.53  168.18
   15.00  -79.12  319.77  -77.19  172.91
   16.00  -78.90  334.77  -80.09  176.15
   17.00  -78.68  349.77  -83.13  175.80
   18.00  -79.68    4.77  -85.12  150.93
   19.00  -79.91   19.77  -85.48  115.45
   20.00  -79.13   34.77  -84.29   82.47
   21.00  -77.38   49.77  -81.23   61.75
   22.00  -74.66   64.77  -76.25   52.89
   23.00  -73.00   79.77  -71.21   56.59
</PRE>


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