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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>
22 Apr 1997 15:23:46 yearsecs   9645826
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -63.12  205.43  -47.89  130.64
    1.00  -63.42  220.43  -49.21  141.04
    2.00  -64.06  235.43  -51.36  151.35
    3.00  -64.70  250.43  -53.88  161.65
    4.00  -64.43  265.43  -55.92  172.70
    5.00  -65.68  280.43  -59.67  182.56
    6.00  -65.99  295.43  -63.02  193.40
    7.00  -65.87  310.43  -66.42  205.54
    8.00  -66.57  325.43  -70.80  217.84
    9.00  -66.00  340.43  -74.05  235.94
   10.00  -65.57  355.43  -76.91  260.16
   11.00  -65.38   10.43  -78.51  292.97
   12.00  -65.41   25.43  -77.63  328.77
   13.00  -65.67   40.43  -74.70  356.85
   14.00  -66.15   55.43  -71.19   17.34
   15.00  -66.86   70.43  -67.88   33.97
   16.00  -67.79   85.43  -65.01   48.73
   17.00  -68.91  100.43  -62.63   62.11
   18.00  -68.89  115.43  -59.61   72.52
   19.00  -68.23  130.43  -56.54   81.76
   20.00  -66.95  145.43  -53.48   90.67
   21.00  -65.87  160.43  -51.17  100.17
   22.00  -64.73  175.43  -49.29  110.05
   23.00  -63.61  190.43  -47.95  120.23
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -72.71  205.43  -57.30  129.53
    1.00  -73.83  220.43  -59.15  137.67
    2.00  -74.80  235.43  -61.28  145.34
    3.00  -76.33  250.43  -64.25  151.76
    4.00  -78.79  265.43  -68.16  155.08
    5.00  -79.64  280.43  -70.82  159.15
    6.00  -79.10  295.43  -72.82  166.00
    7.00  -78.55  310.43  -75.23  172.83
    8.00  -79.40  325.43  -78.32  172.48
    9.00  -79.22  340.43  -81.20  173.85
   10.00  -79.20  355.43  -84.03  167.58
   11.00  -78.99   10.43  -86.31  143.06
   12.00  -78.69   25.43  -86.14   93.19
   13.00  -78.48   40.43  -83.39   72.06
   14.00  -78.56   55.43  -80.05   70.38
   15.00  -78.16   70.43  -76.62   70.95
   16.00  -78.04   85.43  -73.38   75.35
   17.00  -76.75  100.43  -69.57   77.74
   18.00  -76.59  115.43  -66.84   84.33
   19.00  -77.06  130.43  -65.17   92.16
   20.00  -76.41  145.43  -62.95   98.54
   21.00  -74.54  160.43  -59.92  104.75
   22.00  -73.66  175.43  -58.29  112.60
   23.00  -72.86  190.43  -57.19  120.94
</PRE>


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