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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>
18 Oct 1997 12:46:54 yearsecs  25102014
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -62.74  234.63  -50.03  151.34
    1.00  -63.24  249.63  -52.43  161.96
    2.00  -63.79  264.63  -55.22  172.62
    3.00  -64.34  279.63  -58.33  183.37
    4.00  -64.05  294.63  -61.13  195.27
    5.00  -65.36  309.63  -65.79  205.67
    6.00  -65.71  324.63  -69.86  218.70
    7.00  -65.59  339.63  -73.50  235.78
    8.00  -66.29  354.63  -77.45  257.15
    9.00  -65.67    9.63  -78.79  290.75
   10.00  -65.25   24.63  -77.57  326.90
   11.00  -65.06   39.63  -74.20  354.56
   12.00  -65.10   54.63  -70.20   14.31
   13.00  -65.36   69.63  -66.44   30.25
   14.00  -65.84   84.63  -63.17   44.55
   15.00  -66.55   99.63  -60.43   57.88
   16.00  -67.48  114.63  -58.33   70.23
   17.00  -68.63  129.63  -57.06   81.63
   18.00  -68.66  144.63  -55.30   91.34
   19.00  -67.96  159.63  -53.35  100.61
   20.00  -66.64  174.63  -51.23  110.01
   21.00  -65.54  189.63  -49.87  119.84
   22.00  -64.37  204.63  -49.06  129.98
   23.00  -63.19  219.63  -48.93  140.54
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -72.05  234.63  -58.64  146.75
    1.00  -73.21  249.63  -61.39  154.61
    2.00  -74.20  264.63  -64.29  161.98
    3.00  -75.31  279.63  -67.58  168.27
    4.00  -77.95  294.63  -72.03  169.11
    5.00  -78.92  309.63  -75.23  171.16
    6.00  -78.31  324.63  -77.94  177.87
    7.00  -77.68  339.63  -81.01  184.47
    8.00  -78.63  354.63  -84.11  173.70
    9.00  -78.33    9.63  -86.86  151.45
   10.00  -78.40   24.63  -86.49   92.04
   11.00  -78.23   39.63  -83.62   70.05
   12.00  -77.87   54.63  -80.14   65.84
   13.00  -77.70   69.63  -76.61   68.56
   14.00  -77.84   84.63  -73.43   74.34
   15.00  -77.43   99.63  -70.23   79.12
   16.00  -77.27  114.63  -67.55   85.29
   17.00  -75.74  129.63  -64.04   89.87
   18.00  -75.52  144.63  -62.15   97.21
   19.00  -76.22  159.63  -61.65  105.48
   20.00  -75.63  174.63  -60.31  112.90
   21.00  -73.69  189.63  -58.04  120.56
   22.00  -72.92  204.63  -57.47  129.04
   23.00  -72.15  219.63  -57.47  137.89
</PRE>


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