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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>
31 Oct 1997 11:48:34 yearsecs  26221714
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -61.65  247.61  -50.68  161.35
    1.00  -62.78  262.61  -53.97  171.87
    2.00  -63.59  277.61  -57.29  182.56
    3.00  -67.45  292.61  -63.67  189.28
    4.00  -67.07  307.61  -66.77  201.24
    5.00  -67.75  322.61  -71.07  212.71
    6.00  -67.66  337.61  -74.80  228.50
    7.00  -67.89  352.61  -78.54  249.38
    8.00  -68.64    7.61  -81.80  280.83
    9.00  -68.78   22.61  -81.83  325.69
   10.00  -68.51   37.61  -78.57  358.87
   11.00  -68.32   52.61  -74.32   19.35
   12.00  -68.36   67.61  -70.20   34.73
   13.00  -68.62   82.61  -66.54   48.09
   14.00  -69.10   97.61  -63.45   60.40
   15.00  -69.81  112.61  -61.04   71.85
   16.00  -70.58  127.61  -59.31   82.35
   17.00  -70.98  142.61  -57.85   91.89
   18.00  -71.01  157.61  -56.56  100.97
   19.00  -70.41  172.61  -55.12  109.85
   20.00  -69.53  187.61  -53.86  118.93
   21.00  -68.55  202.61  -53.07  128.31
   22.00  -65.37  217.61  -50.84  138.62
   23.00  -63.18  232.61  -50.21  149.72
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -66.65  247.61  -55.26  158.43
    1.00  -67.78  262.61  -58.43  167.83
    2.00  -68.59  277.61  -61.68  177.21
    3.00  -74.69  292.61  -69.48  176.39
    4.00  -76.69  307.61  -73.77  178.37
    5.00  -77.63  322.61  -77.31  180.52
    6.00  -76.98  337.61  -80.42  188.56
    7.00  -76.11  352.61  -83.86  199.89
    8.00  -76.52    7.61  -87.64  190.96
    9.00  -76.55   22.61  -88.10   63.26
   10.00  -76.60   37.61  -84.24   53.50
   11.00  -76.64   52.61  -80.35   57.32
   12.00  -76.97   67.61  -76.77   64.53
   13.00  -76.81   82.61  -73.25   69.99
   14.00  -76.74   97.61  -70.10   76.44
   15.00  -76.55  112.61  -67.27   82.94
   16.00  -76.58  127.61  -65.08   90.09
   17.00  -76.25  142.61  -63.05   96.97
   18.00  -77.09  157.61  -62.65  105.15
   19.00  -77.02  172.61  -61.80  112.47
   20.00  -75.88  187.61  -60.28  119.73
   21.00  -73.55  202.61  -58.04  127.82
   22.00  -70.37  217.61  -55.63  137.27
   23.00  -68.18  232.61  -54.85  147.57
</PRE>


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