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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>
31 Oct 1997 21:56:48 yearsecs  26258208
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -66.00  100.63  -59.64   57.86
    1.00  -65.58  115.63  -56.21   68.77
    2.00  -66.51  130.63  -54.76   80.35
    3.00  -67.43  145.63  -53.95   91.13
    4.00  -67.11  160.63  -52.42  100.86
    5.00  -67.82  175.63  -52.38  110.98
    6.00  -67.70  190.63  -52.02  120.67
    7.00  -67.76  205.63  -52.42  130.31
    8.00  -68.77  220.63  -54.31  139.65
    9.00  -69.07  235.63  -56.00  149.07
   10.00  -69.13  250.63  -57.88  158.71
   11.00  -68.72  265.63  -59.74  168.96
   12.00  -68.63  280.63  -62.28  179.22
   13.00  -68.79  295.63  -65.47  189.42
   14.00  -69.20  310.63  -69.27  199.68
   15.00  -69.85  325.63  -73.51  210.45
   16.00  -70.61  340.63  -77.90  223.01
   17.00  -71.15  355.63  -82.00  242.25
   18.00  -71.06   10.63  -84.62  283.89
   19.00  -70.47   25.63  -83.24  338.51
   20.00  -69.53   40.63  -78.83    7.10
   21.00  -68.60   55.63  -73.76   23.50
   22.00  -67.78   70.63  -68.79   36.12
   23.00  -66.93   85.63  -64.08   47.30
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -71.27  100.63  -64.85   66.27
    1.00  -72.26  115.63  -62.86   77.22
    2.00  -73.06  130.63  -61.33   86.95
    3.00  -77.69  145.63  -64.17  100.05
    4.00  -79.66  160.63  -65.02  108.72
    5.00  -79.90  175.63  -64.62  115.26
    6.00  -79.01  190.63  -63.47  121.60
    7.00  -78.58  205.63  -63.20  128.48
    8.00  -79.19  220.63  -64.41  135.02
    9.00  -79.36  235.63  -65.56  141.46
   10.00  -79.71  250.63  -67.21  147.37
   11.00  -79.85  265.63  -69.00  153.12
   12.00  -79.84  280.63  -70.97  158.71
   13.00  -79.56  295.63  -73.10  164.59
   14.00  -79.42  310.63  -75.60  169.45
   15.00  -79.14  325.63  -78.32  173.87
   16.00  -79.14  340.63  -81.25  174.40
   17.00  -78.87  355.63  -84.21  170.57
   18.00  -79.45   10.63  -85.88  139.68
   19.00  -79.23   25.63  -85.66   97.80
   20.00  -78.23   40.63  -83.40   69.64
   21.00  -76.29   55.63  -79.46   56.31
   22.00  -73.91   70.63  -74.22   53.57
   23.00  -72.22   85.63  -69.12   58.38
</PRE>


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