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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>
27 Oct 1997 19:24:22 yearsecs  25903462
 
             Equatorward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -56.81  137.64  -43.71   78.80
    1.00  -57.16  152.64  -42.74   90.77
    2.00  -57.50  167.64  -42.24  102.47
    3.00  -57.84  182.64  -42.18  113.96
    4.00  -58.17  197.64  -42.69  125.23
    5.00  -58.92  212.64  -44.24  136.34
    6.00  -60.85  227.64  -47.46  146.95
    7.00  -62.43  242.64  -50.73  157.28
    8.00  -62.02  257.64  -52.49  168.65
    9.00  -61.51  272.64  -54.51  180.52
   10.00  -61.15  287.64  -57.01  192.80
   11.00  -60.99  302.64  -60.13  205.47
   12.00  -61.05  317.64  -63.84  219.01
   13.00  -61.34  332.64  -67.84  234.49
   14.00  -61.84  347.64  -71.72  253.58
   15.00  -62.56    2.64  -74.91  278.83
   16.00  -63.50   17.64  -76.30  310.73
   17.00  -64.66   32.64  -75.39  342.28
   18.00  -64.90   47.64  -71.89    5.51
   19.00  -63.53   62.64  -66.15   20.10
   20.00  -61.87   77.64  -60.31   31.99
   21.00  -60.66   92.64  -55.48   43.97
   22.00  -58.82  107.64  -50.38   55.18
   23.00  -57.72  122.64  -46.64   67.12
 
              Poleward Boundary
     MLT    MLAT   MLONG    GLAT   GLONG
    0.00  -68.52  137.64  -55.92   86.73
    1.00  -69.49  152.64  -55.41   96.98
    2.00  -70.40  167.64  -55.33  106.78
    3.00  -70.83  182.64  -55.24  116.07
    4.00  -71.58  197.64  -55.97  125.10
    5.00  -72.95  212.64  -57.83  133.60
    6.00  -73.19  227.64  -59.07  142.04
    7.00  -71.90  242.64  -59.37  151.61
    8.00  -71.72  257.64  -61.14  160.82
    9.00  -72.37  272.64  -64.02  169.11
   10.00  -71.96  287.64  -66.41  178.85
   11.00  -71.74  302.64  -69.39  188.76
   12.00  -71.57  317.64  -72.78  199.43
   13.00  -71.46  332.64  -76.46  211.86
   14.00  -71.55  347.64  -80.35  227.66
   15.00  -71.43    2.64  -83.76  256.31
   16.00  -71.89   17.64  -85.70  312.75
   17.00  -72.20   32.64  -83.39    5.35
   18.00  -71.80   47.64  -78.96   25.89
   19.00  -70.77   62.64  -73.87   36.87
   20.00  -70.43   77.64  -69.54   48.25
   21.00  -69.50   92.64  -64.96   57.48
   22.00  -69.56  107.64  -61.76   68.15
   23.00  -68.46  122.64  -57.95   76.84
</PRE>


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