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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>
23 Apr 1997 23:32:29 yearsecs   9761549
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -63.49   75.90  -62.68   32.87
    1.00  -63.59   90.90  -59.22   46.38
    2.00  -64.32  105.90  -56.77   59.82
    3.00  -65.05  120.90  -54.73   72.09
    4.00  -64.80  135.90  -52.31   82.63
    5.00  -65.98  150.90  -51.99   93.76
    6.00  -66.26  165.90  -51.24  104.03
    7.00  -66.12  180.90  -50.53  114.07
    8.00  -66.81  195.90  -51.19  124.06
    9.00  -66.31  210.90  -51.28  133.94
   10.00  -65.87  225.90  -52.03  144.07
   11.00  -65.68  240.90  -53.51  154.39
   12.00  -65.71  255.90  -55.58  164.85
   13.00  -65.97  270.90  -58.20  175.32
   14.00  -66.45  285.90  -61.42  185.68
   15.00  -67.16  300.90  -65.27  195.88
   16.00  -68.09  315.90  -69.66  206.14
   17.00  -69.18  330.90  -74.33  217.20
   18.00  -69.12  345.90  -78.05  234.97
   19.00  -68.48    0.90  -80.70  264.21
   20.00  -67.25   15.90  -80.61  305.92
   21.00  -66.18   30.90  -77.53  341.15
   22.00  -65.08   45.90  -72.57    3.56
   23.00  -64.02   60.90  -67.21   19.15
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -71.29   75.90  -70.76   49.14
    1.00  -72.42   90.90  -68.05   62.29
    2.00  -73.41  105.90  -65.73   73.43
    3.00  -75.48  120.90  -65.02   85.08
    4.00  -78.04  135.90  -65.46   96.08
    5.00  -78.82  150.90  -64.84  103.69
    6.00  -78.17  165.90  -63.25  109.90
    7.00  -77.53  180.90  -62.07  116.73
    8.00  -78.33  195.90  -62.78  123.99
    9.00  -78.06  210.90  -62.84  131.10
   10.00  -78.15  225.90  -63.70  138.11
   11.00  -77.96  240.90  -64.71  145.30
   12.00  -77.75  255.90  -66.12  152.56
   13.00  -77.56  270.90  -67.94  159.79
   14.00  -77.67  285.90  -70.35  166.22
   15.00  -77.29  300.90  -72.79  173.61
   16.00  -77.26  315.90  -75.76  179.74
   17.00  -76.09  330.90  -78.59  191.02
   18.00  -76.04  345.90  -82.17  197.91
   19.00  -76.41    0.90  -85.98  197.68
   20.00  -75.68   15.90  -89.87  280.61
   21.00  -73.71   30.90  -85.01   14.11
   22.00  -72.57   45.90  -80.05   27.69
   23.00  -71.55   60.90  -75.03   37.94
</PRE>


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