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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>
25 Feb 1997 19:58:44 yearsecs   4823924
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -65.80  135.80  -53.36   83.32
    1.00  -65.54  150.80  -51.55   93.44
    2.00  -66.44  165.80  -51.44  104.03
    3.00  -67.34  180.80  -51.75  114.24
    4.00  -67.00  195.80  -51.37  123.99
    5.00  -67.71  210.80  -52.63  133.64
    6.00  -67.65  225.80  -53.70  143.36
    7.00  -67.72  240.80  -55.36  153.19
    8.00  -68.56  255.80  -58.10  162.56
    9.00  -68.63  270.80  -60.51  172.54
   10.00  -68.34  285.80  -63.04  183.17
   11.00  -68.14  300.80  -66.08  194.22
   12.00  -68.18  315.80  -69.71  205.88
   13.00  -68.44  330.80  -73.72  219.02
   14.00  -68.92  345.80  -77.86  235.47
   15.00  -69.63    0.80  -81.78  260.09
   16.00  -70.41   15.80  -84.12  304.68
   17.00  -70.90   30.80  -82.63  353.95
   18.00  -70.88   45.80  -78.70   19.65
   19.00  -70.30   60.80  -73.95   33.71
   20.00  -69.40   75.80  -69.05   44.30
   21.00  -68.52   90.80  -64.45   54.31
   22.00  -67.75  105.80  -60.34   64.25
   23.00  -66.82  120.80  -56.58   73.82
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -70.80  135.80  -58.44   87.60
    1.00  -71.88  150.80  -57.98   97.47
    2.00  -72.75  165.80  -57.79  106.74
    3.00  -77.67  180.80  -62.21  116.72
    4.00  -79.70  195.80  -64.20  123.92
    5.00  -80.06  210.80  -64.86  130.30
    6.00  -79.37  225.80  -64.88  137.17
    7.00  -78.54  240.80  -65.23  144.63
    8.00  -78.74  255.80  -66.95  151.03
    9.00  -78.58  270.80  -68.71  157.75
   10.00  -78.52  285.80  -70.90  164.05
   11.00  -78.37  300.80  -73.36  170.20
   12.00  -78.57  315.80  -76.26  174.35
   13.00  -78.37  330.80  -79.22  178.85
   14.00  -78.28  345.80  -82.36  180.16
   15.00  -78.06    0.80  -85.56  174.31
   16.00  -78.07   15.80  -87.54  126.17
   17.00  -77.85   30.80  -85.69   72.62
   18.00  -78.62   45.80  -82.19   71.45
   19.00  -78.59   60.80  -78.86   71.08
   20.00  -77.70   75.80  -75.24   70.63
   21.00  -75.83   90.80  -70.81   70.78
   22.00  -73.42  105.80  -65.75   73.38
   23.00  -71.82  120.80  -61.57   79.69
</PRE>


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