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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>
19 Sep 1997 13:38:54 yearsecs  22599534
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -64.66  227.51  -51.06  145.59
    1.00  -64.91  242.51  -53.01  155.92
    2.00  -65.97  257.51  -56.05  165.79
    3.00  -67.05  272.51  -59.43  175.40
    4.00  -66.96  287.51  -62.18  186.23
    5.00  -68.00  302.51  -66.36  195.74
    6.00  -68.43  317.51  -70.35  206.80
    7.00  -69.45  332.51  -74.95  218.06
    8.00  -70.89  347.51  -79.84  230.49
    9.00  -70.36    2.51  -82.78  261.32
   10.00  -69.52   17.51  -83.08  310.71
   11.00  -68.81   32.51  -80.10  350.09
   12.00  -68.43   47.51  -75.85   13.42
   13.00  -68.36   62.51  -71.60   29.93
   14.00  -68.60   77.51  -67.82   43.90
   15.00  -69.12   92.51  -64.63   56.71
   16.00  -69.66  107.51  -61.88   68.22
   17.00  -69.66  122.51  -59.17   78.10
   18.00  -69.69  137.51  -57.12   87.65
   19.00  -68.88  152.51  -54.80   96.52
   20.00  -67.92  167.51  -52.84  105.73
   21.00  -67.18  182.51  -51.57  115.33
   22.00  -66.63  197.51  -51.04  125.11
   23.00  -65.78  212.51  -50.87  135.11
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -70.18  227.51  -56.22  143.43
    1.00  -71.44  242.51  -58.94  151.87
    2.00  -72.33  257.51  -61.66  160.11
    3.00  -78.02  272.51  -68.53  159.61
    4.00  -80.01  287.51  -72.08  160.61
    5.00  -80.47  302.51  -74.62  163.37
    6.00  -79.85  317.51  -76.96  169.09
    7.00  -79.15  332.51  -79.66  174.55
    8.00  -78.86  347.51  -82.64  175.07
    9.00  -78.80    2.51  -85.46  163.02
   10.00  -78.51   17.51  -87.04  118.53
   11.00  -78.52   32.51  -85.03   78.72
   12.00  -78.73   47.51  -81.80   72.01
   13.00  -78.50   62.51  -78.46   70.81
   14.00  -78.26   77.51  -75.13   73.47
   15.00  -78.02   92.51  -71.98   77.92
   16.00  -77.79  107.51  -69.12   83.33
   17.00  -77.54  122.51  -66.64   89.33
   18.00  -78.64  137.51  -65.85   97.66
   19.00  -78.93  152.51  -64.82  104.51
   20.00  -78.12  167.51  -63.12  110.62
   21.00  -76.23  182.51  -60.71  117.17
   22.00  -73.29  197.51  -57.68  124.98
   23.00  -71.49  212.51  -56.40  133.90
</PRE>


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