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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>
17 Apr 1997 23:03:55 yearsecs   9241435
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -57.27   83.58  -53.09   31.57
    1.00  -57.69   98.58  -50.72   45.89
    2.00  -58.11  113.58  -48.53   59.70
    3.00  -58.53  128.58  -46.66   72.60
    4.00  -58.66  143.58  -45.06   84.47
    5.00  -59.48  158.58  -44.75   96.24
    6.00  -61.30  173.58  -45.88  107.91
    7.00  -62.77  188.58  -47.10  118.88
    8.00  -62.60  203.58  -47.28  129.39
    9.00  -61.96  218.58  -47.66  140.09
   10.00  -61.60  233.58  -48.83  151.03
   11.00  -61.35  248.58  -50.53  162.24
   12.00  -61.39  263.58  -52.86  173.59
   13.00  -61.65  278.58  -55.71  185.08
   14.00  -62.13  293.58  -59.15  196.63
   15.00  -62.84  308.58  -63.26  208.37
   16.00  -63.77  323.58  -67.86  221.00
   17.00  -64.92  338.58  -72.63  235.80
   18.00  -65.11  353.58  -76.12  257.75
   19.00  -63.85    8.58  -76.77  290.08
   20.00  -62.20   23.58  -74.14  323.08
   21.00  -61.01   38.58  -69.49  347.77
   22.00  -59.22   53.58  -63.02    4.46
   23.00  -58.12   68.58  -57.60   18.42
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -73.57   83.58  -70.73   60.57
    1.00  -74.41   98.58  -68.07   71.34
    2.00  -75.26  113.58  -65.98   80.98
    3.00  -75.79  128.58  -64.22   89.40
    4.00  -76.68  143.58  -63.38   97.93
    5.00  -77.84  158.58  -63.33  106.23
    6.00  -78.16  173.58  -62.92  113.49
    7.00  -77.54  188.58  -61.97  120.46
    8.00  -77.75  203.58  -62.30  127.70
    9.00  -78.14  218.58  -63.27  134.69
   10.00  -77.83  233.58  -63.96  141.98
   11.00  -77.38  248.58  -64.97  149.59
   12.00  -77.06  263.58  -66.53  157.23
   13.00  -76.81  278.58  -68.54  164.82
   14.00  -76.68  293.58  -71.04  172.10
   15.00  -76.38  308.58  -73.80  179.81
   16.00  -76.52  323.58  -77.09  185.87
   17.00  -76.42  338.58  -80.51  192.38
   18.00  -76.03  353.58  -84.09  201.10
   19.00  -75.31    8.58  -87.88  224.90
   20.00  -74.90   23.58  -87.66   13.43
   21.00  -74.03   38.58  -83.10   28.91
   22.00  -74.07   53.58  -78.91   42.71
   23.00  -73.33   68.58  -74.34   50.16
</PRE>


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