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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>
20 Aug 1997 16:21:44 yearsecs  20017304
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -63.32  190.32  -47.65  120.14
    1.00  -63.45  205.32  -48.20  130.53
    2.00  -64.16  220.32  -49.91  140.77
    3.00  -64.87  235.32  -52.09  150.92
    4.00  -64.60  250.32  -53.77  161.63
    5.00  -65.80  265.32  -57.12  171.47
    6.00  -66.07  280.32  -60.00  182.04
    7.00  -65.93  295.32  -62.95  193.40
    8.00  -66.62  310.32  -67.05  204.21
    9.00  -66.25  325.32  -70.50  218.36
   10.00  -65.83  340.32  -73.88  236.16
   11.00  -65.59  355.32  -76.91  259.91
   12.00  -65.60   10.32  -78.75  292.50
   13.00  -65.85   25.32  -78.15  328.94
   14.00  -66.33   40.32  -75.49  357.98
   15.00  -67.04   55.32  -72.20   19.18
   16.00  -67.97   70.32  -69.08   36.28
   17.00  -69.06   85.32  -66.30   51.13
   18.00  -69.01  100.32  -62.76   62.20
   19.00  -68.37  115.32  -59.11   71.79
   20.00  -67.13  130.32  -55.44   80.69
   21.00  -66.05  145.32  -52.57   90.01
   22.00  -64.93  160.32  -50.22   99.69
   23.00  -63.85  175.32  -48.40  109.76
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -73.15  190.32  -57.49  120.90
    1.00  -74.22  205.32  -58.79  129.22
    2.00  -75.16  220.32  -60.44  137.03
    3.00  -76.98  235.32  -63.31  143.55
    4.00  -79.31  250.32  -66.84  147.82
    5.00  -80.06  265.32  -69.12  152.58
    6.00  -79.52  280.32  -70.72  159.41
    7.00  -79.00  295.32  -72.75  166.26
    8.00  -79.76  310.32  -75.66  168.00
    9.00  -79.58  325.32  -78.33  171.55
   10.00  -79.59  340.32  -81.14  171.33
   11.00  -79.42  355.32  -83.91  165.65
   12.00  -79.18   10.32  -86.12  142.10
   13.00  -78.97   25.32  -85.92   96.24
   14.00  -79.03   40.32  -83.26   77.14
   15.00  -78.66   55.32  -80.08   70.98
   16.00  -78.58   70.32  -76.79   72.87
   17.00  -77.47   85.32  -73.07   73.34
   18.00  -77.37  100.32  -70.06   79.25
   19.00  -77.70  115.32  -67.80   86.46
   20.00  -77.01  130.32  -65.14   92.03
   21.00  -75.19  145.32  -61.76   97.24
   22.00  -74.19  160.32  -59.58  104.47
   23.00  -73.34  175.32  -57.96  112.43
</PRE>


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