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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>
15 Apr 1997 13:24:07 yearsecs   9033847
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -64.40  234.02  -51.51  150.22
    1.00  -64.01  249.02  -53.05  161.06
    2.00  -64.96  264.02  -56.16  171.25
    3.00  -65.90  279.02  -59.60  181.28
    4.00  -65.70  294.02  -62.46  192.72
    5.00  -66.74  309.02  -66.83  202.95
    6.00  -66.91  324.02  -70.74  215.78
    7.00  -66.76  339.02  -74.38  232.42
    8.00  -67.30  354.02  -78.29  253.56
    9.00  -67.02    9.02  -80.21  287.56
   10.00  -66.61   24.02  -79.21  326.70
   11.00  -66.42   39.02  -75.92  356.12
   12.00  -66.45   54.02  -71.91   16.39
   13.00  -66.71   69.02  -68.10   32.35
   14.00  -67.19   84.02  -64.75   46.46
   15.00  -67.90   99.02  -61.94   59.47
   16.00  -68.83  114.02  -59.81   71.49
   17.00  -69.84  129.02  -58.37   82.45
   18.00  -69.67  144.02  -56.39   91.71
   19.00  -69.10  159.02  -54.54  100.79
   20.00  -67.99  174.02  -52.62  109.98
   21.00  -66.96  189.02  -51.28  119.56
   22.00  -65.95  204.02  -50.58  129.44
   23.00  -65.03  219.02  -50.63  139.66
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -73.46  234.02  -59.90  145.50
    1.00  -74.48  249.02  -62.45  153.02
    2.00  -75.44  264.02  -65.25  159.91
    3.00  -78.32  279.02  -69.71  161.77
    4.00  -80.43  294.02  -73.28  161.31
    5.00  -80.89  309.02  -75.79  163.08
    6.00  -80.36  324.02  -78.19  167.35
    7.00  -79.82  339.02  -80.87  169.98
    8.00  -80.29  354.02  -83.24  159.63
    9.00  -79.99    9.02  -85.23  140.56
   10.00  -80.11   24.02  -85.00  107.06
   11.00  -79.83   39.02  -83.17   84.76
   12.00  -79.73   54.02  -80.35   78.00
   13.00  -79.46   69.02  -77.31   76.88
   14.00  -79.44   84.02  -74.38   80.00
   15.00  -79.09   99.02  -71.49   83.46
   16.00  -79.14  114.02  -69.17   89.05
   17.00  -78.48  129.02  -66.64   93.78
   18.00  -78.62  144.02  -65.21  100.45
   19.00  -78.57  159.02  -64.03  107.06
   20.00  -77.79  174.02  -62.53  113.52
   21.00  -76.09  189.02  -60.48  120.49
   22.00  -74.78  204.02  -59.32  128.43
   23.00  -73.75  219.02  -58.98  136.93
</PRE>


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