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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 Dec 1997 15:50:00 yearsecs  30988200
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -65.12  191.40  -49.45  121.01
    1.00  -65.32  206.40  -50.07  131.09
    2.00  -66.29  221.40  -52.02  140.92
    3.00  -67.27  236.40  -54.43  150.52
    4.00  -67.06  251.40  -56.14  160.75
    5.00  -67.96  266.40  -59.20  170.25
    6.00  -68.17  281.40  -62.03  180.34
    7.00  -68.90  296.40  -65.73  189.81
    8.00  -70.43  311.40  -70.42  197.67
    9.00  -71.53  326.40  -74.93  206.29
   10.00  -71.78  341.40  -78.92  219.24
   11.00  -70.66  356.40  -81.79  246.15
   12.00  -70.04   11.40  -83.60  289.39
   13.00  -69.79   26.40  -82.38  338.51
   14.00  -69.87   41.40  -78.96    9.54
   15.00  -70.27   56.40  -75.15   29.34
   16.00  -70.70   71.40  -71.42   44.06
   17.00  -70.64   86.40  -67.53   55.27
   18.00  -70.63  101.40  -64.08   65.65
   19.00  -69.81  116.40  -60.35   74.33
   20.00  -68.81  131.40  -57.00   82.96
   21.00  -67.85  146.40  -54.30   91.92
   22.00  -67.12  161.40  -52.38  101.39
   23.00  -66.27  176.40  -50.80  111.09
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -71.63  191.40  -55.96  121.42
    1.00  -72.83  206.40  -57.45  130.07
    2.00  -73.68  221.40  -59.07  138.29
    3.00  -78.96  236.40  -65.24  142.22
    4.00  -80.80  251.40  -68.22  145.97
    5.00  -81.25  266.40  -70.12  150.44
    6.00  -80.69  281.40  -71.61  156.71
    7.00  -79.85  296.40  -73.37  163.91
    8.00  -80.01  311.40  -75.93  167.22
    9.00  -80.11  326.40  -78.58  168.85
   10.00  -80.00  341.40  -81.27  168.29
   11.00  -79.90  356.40  -83.82  160.55
   12.00  -80.03   11.40  -85.34  135.24
   13.00  -79.76   26.40  -85.10  100.33
   14.00  -79.50   41.40  -82.88   80.49
   15.00  -79.25   56.40  -79.88   74.73
   16.00  -78.99   71.40  -76.69   75.05
   17.00  -78.74   86.40  -73.57   78.10
   18.00  -79.70  101.40  -71.49   86.03
   19.00  -79.90  116.40  -69.43   91.66
   20.00  -79.09  131.40  -66.91   95.80
   21.00  -77.28  146.40  -63.70   99.95
   22.00  -74.47  161.40  -59.79  105.24
   23.00  -72.83  176.40  -57.41  112.89
</PRE>


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