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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 Sep 1997 19:09:04 yearsecs  23137744
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -65.01  141.35  -51.91   86.60
    1.00  -66.10  156.35  -51.69   97.51
    2.00  -66.90  171.35  -51.63  107.90
    3.00  -67.69  186.35  -52.02  117.90
    4.00  -67.27  201.35  -51.78  127.59
    5.00  -67.90  216.35  -53.16  137.17
    6.00  -67.77  231.35  -54.34  146.94
    7.00  -67.93  246.35  -56.24  156.75
    8.00  -68.85  261.35  -59.18  165.98
    9.00  -69.09  276.35  -61.88  175.74
   10.00  -68.86  291.35  -64.61  186.31
   11.00  -68.67  306.35  -67.81  197.46
   12.00  -68.70  321.35  -71.53  209.49
   13.00  -68.96  336.35  -75.55  223.52
   14.00  -69.45  351.35  -79.62  242.13
   15.00  -70.15    6.35  -83.19  272.80
   16.00  -70.88   21.35  -84.29  325.82
   17.00  -71.16   36.35  -81.52    6.68
   18.00  -71.25   51.35  -77.45   27.63
   19.00  -70.65   66.35  -72.74   39.71
   20.00  -69.81   81.35  -68.01   49.66
   21.00  -68.98   96.35  -63.61   59.27
   22.00  -67.89  111.35  -59.37   68.42
   23.00  -66.17  126.35  -55.03   77.07
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -70.01  141.35  -57.01   90.31
    1.00  -71.28  156.35  -56.92  100.37
    2.00  -72.21  171.35  -56.98  109.73
    3.00  -77.69  186.35  -62.15  119.40
    4.00  -79.74  201.35  -64.30  126.33
    5.00  -80.18  216.35  -65.19  132.58
    6.00  -79.53  231.35  -65.40  139.45
    7.00  -78.62  246.35  -65.83  147.03
    8.00  -78.73  261.35  -67.60  153.45
    9.00  -78.65  276.35  -69.54  159.92
   10.00  -78.46  291.35  -71.77  166.37
   11.00  -78.41  306.35  -74.40  172.01
   12.00  -78.59  321.35  -77.36  175.72
   13.00  -78.33  336.35  -80.37  179.83
   14.00  -78.11  351.35  -83.57  180.35
   15.00  -77.83    6.35  -86.74  167.68
   16.00  -77.65   21.35  -87.59   93.79
   17.00  -77.35   36.35  -84.54   62.18
   18.00  -78.28   51.35  -80.95   68.34
   19.00  -78.24   66.35  -77.55   70.28
   20.00  -77.55   81.35  -73.96   72.08
   21.00  -75.65   96.35  -69.52   73.07
   22.00  -72.89  111.35  -64.23   75.69
   23.00  -71.17  126.35  -60.08   82.24
</PRE>


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