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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>
17 Sep 1997 12:19:44 yearsecs  22421984
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -60.98  246.08  -49.83  160.55
    1.00  -61.60  261.08  -52.65  171.53
    2.00  -62.23  276.08  -55.79  182.61
    3.00  -62.86  291.08  -59.29  193.81
    4.00  -62.15  306.08  -62.03  207.06
    5.00  -63.29  321.08  -66.79  219.25
    6.00  -64.10  336.08  -71.27  234.23
    7.00  -64.44  351.08  -74.97  254.77
    8.00  -64.66    6.08  -77.47  283.60
    9.00  -64.38   21.08  -77.01  318.52
   10.00  -63.97   36.08  -73.78  347.28
   11.00  -63.78   51.08  -69.60    7.82
   12.00  -63.81   66.08  -65.58   24.04
   13.00  -64.07   81.08  -62.08   38.51
   14.00  -64.56   96.08  -59.12   52.15
   15.00  -65.26  111.08  -56.73   64.99
   16.00  -66.20  126.08  -55.10   76.91
   17.00  -67.35  141.08  -54.34   88.06
   18.00  -67.35  156.08  -52.97   97.97
   19.00  -66.69  171.08  -51.43  107.65
   20.00  -65.21  186.08  -49.54  117.41
   21.00  -64.10  201.08  -48.65  127.57
   22.00  -62.69  216.08  -48.15  138.16
   23.00  -61.52  231.08  -48.47  149.24
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -71.09  246.08  -59.05  154.32
    1.00  -71.91  261.08  -61.81  162.70
    2.00  -72.84  276.08  -64.99  170.47
    3.00  -73.66  291.08  -68.42  177.72
    4.00  -75.92  306.08  -73.01  180.09
    5.00  -76.73  321.08  -76.63  183.93
    6.00  -76.77  336.08  -80.02  189.39
    7.00  -76.19  351.08  -83.49  198.65
    8.00  -76.95    6.08  -87.14  183.90
    9.00  -76.88   21.08  -88.25   79.20
   10.00  -76.79   36.08  -84.64   55.72
   11.00  -76.54   51.08  -80.72   56.18
   12.00  -76.23   66.08  -76.79   60.47
   13.00  -76.13   81.08  -73.17   67.02
   14.00  -76.11   96.08  -69.93   74.11
   15.00  -75.66  111.08  -66.75   80.45
   16.00  -75.53  126.08  -64.31   87.77
   17.00  -74.24  141.08  -61.25   94.03
   18.00  -74.03  156.08  -59.71  102.03
   19.00  -74.56  171.08  -59.37  110.55
   20.00  -74.00  186.08  -58.38  118.62
   21.00  -72.30  201.08  -56.75  127.07
   22.00  -71.89  216.08  -56.99  135.89
   23.00  -70.87  231.08  -57.21  145.28
</PRE>


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