  TABLE 3 ESTIMATES OF 13-MONTH SMOOTH SOLAR ACTIVITY FOR
               BALANCE OF CYCLE 23 CYCLE 24 AND BEGINNING OF CYCLE 25

    TIME         10.7 CM SOLAR FLUX   (F10.7)      GEOMAGNETIC INDEX   (Ap)
                         PERCENTILE                    PERCENTILE
                  95.0%       50%      5.0%     95.0%       50%      5.0% 

 2001.1673   MAR   169.1     164.8     160.8      13.7      13.2      12.7
 2001.2507   APR   174.6     164.2     156.3      14.1      13.2      12.4
 2001.3340   MAY   178.3     163.8     152.8      14.6      13.2      12.3
 2001.4173   JUN   177.3     162.9     149.7      15.0      13.2      11.8
 2001.5007   JUL   173.9     161.5     146.4      15.0      13.2      11.5
 2001.5840   AUG   173.0     159.7     142.8      15.1      13.2      11.2
 2001.6673   SEP   173.6     157.9     137.4      15.5      13.4      10.8
 2001.7507   OCT   174.2     156.5     133.6      16.2      13.8      10.8
 2001.8340   NOV   174.9     155.2     130.9      16.2      13.9      10.6
 2001.9173   DEC   175.0     153.6     127.6      16.7      13.8      10.1
 2002.0007   JAN   174.3     151.4     125.4      17.5      13.9      10.5
 2002.0840   FEB   172.1     148.8     123.1      18.9      14.2      11.2
 2002.1673   MAR   170.2     146.7     121.0      20.1      14.5      11.2
 2002.2507   APR   170.1     144.9     120.7      20.8      14.7      11.2
 2002.3340   MAY   170.7     143.0     120.0      21.8      14.9      11.4
 2002.4173   JUN   171.0     140.7     116.9      22.1      15.1      11.6
 2002.5007   JUL   169.0     138.4     114.2      21.4      15.1      11.9
 2002.5840   AUG   165.8     136.6     113.9      21.5      15.1      12.2
 2002.6673   SEP   162.5     135.1     113.7      21.0      15.1      12.1
 2002.7507   OCT   159.7     133.5     113.2      19.9      15.2      12.1
 2002.8340   NOV   156.6     132.0     112.6      19.9      15.2      11.9
 2002.9173   DEC   152.5     129.7     110.9      19.6      15.3      11.8
 2003.0007   JAN   148.4     126.9     108.6      19.7      15.3      11.3
 2003.0840   FEB   146.6     124.4     106.3      20.1      15.3      11.0
 2003.1673   MAR   145.4     122.1     103.9      20.6      15.3      10.9
 2003.2507   APR   143.6     119.8     100.8      21.4      15.2      10.9
 2003.3340   MAY   140.7     117.8      98.6      22.3      15.4      10.8
 2003.4173   JUN   137.6     116.1      97.5      22.7      15.6      10.9
 2003.5007   JUL   135.6     114.1      95.9      23.0      15.8      10.9
 2003.5840   AUG   134.9     112.1      93.7      23.6      16.0      10.8
 2003.6673   SEP   134.7     110.2      90.9      24.1      16.2      10.6
 2003.7507   OCT   134.5     108.3      87.4      24.0      16.2      10.3
 2003.8340   NOV   133.4     106.2      84.8      23.7      16.3      10.4
 2003.9173   DEC   131.1     104.3      83.2      23.6      16.4      10.6
 2004.0007   JAN   129.9     102.7      81.7      23.6      16.6      11.3
 2004.0840   FEB   128.7     101.6      80.9      23.6      17.0      11.8
 2004.1673   MAR   126.5     100.6      80.5      22.9      17.2      11.9
 2004.2507   APR   124.4      99.7      80.3      21.8      17.1      12.1
 2004.3340   MAY   123.1      98.7      79.8      21.3      17.1      12.2
 2004.4173   JUN   122.4      97.3      78.7      21.7      17.0      12.3
 2004.5007   JUL   121.1      95.8      77.6      22.2      17.0      13.1
 2004.5840   AUG   118.5      94.4      76.7      22.9      17.1      13.6
 2004.6673   SEP   115.2      93.0      76.4      23.3      17.2      13.5
 2004.7507   OCT   112.0      91.5      76.2      23.1      17.1      13.3
 2004.8340   NOV   109.1      90.4      76.1      22.9      16.9      13.4
 2004.9173   DEC   108.1      89.5      75.9      23.1      16.6      13.3
 2005.0007   JAN   106.7      88.5      75.5      23.2      16.2      12.7
 2005.0840   FEB   105.1      87.3      75.4      23.8      15.9      11.9
 2005.1673   MAR   103.3      86.3      74.9      24.4      15.7      10.9
 2005.2507   APR   101.5      85.3      74.4      24.9      15.5      10.5
 2005.3340   MAY    99.8      84.4      74.0      25.3      15.4      10.2
 2005.4173   JUN    98.1      83.4      73.5      25.6      15.4      10.1
 2005.5007   JUL    96.3      82.5      73.1      25.5      15.3      10.3
 2005.5840   AUG    94.6      81.6      72.6      25.0      15.3      10.9
 2005.6673   SEP    93.0      80.6      72.2      24.3      15.2      11.5
 2005.7507   OCT    91.3      79.7      71.8      23.5      15.1      11.4
 2005.8340   NOV    89.7      78.9      71.3      23.2      15.2      11.2
 2005.9173   DEC    88.2      78.0      70.9      22.9      15.4      10.9
 2006.0007   JAN    86.7      77.2      70.5      22.7      15.7      11.0
 2006.0840   FEB    85.3      76.4      70.2      22.3      15.8      11.3
 2006.1673   MAR    83.9      75.6      69.8      21.7      15.8      11.7
 2006.2507   APR    82.5      74.9      69.4      20.9      15.6      11.8
 2006.3340   MAY    81.3      74.2      69.1      20.0      15.4      12.0
 2006.4173   JUN    80.1      73.6      68.8      20.1      15.2      12.0
 2006.5007   JUL    79.0      72.9      68.5      19.8      15.1      11.7
 2006.5840   AUG    78.0      72.4      68.2      19.4      14.9      11.7
 2006.6673   SEP    77.0      71.9      68.0      18.9      14.9      11.7
 2006.7507   OCT    76.2      71.4      67.8      18.1      14.9      11.5
 2006.8340   NOV    75.4      71.0      67.6      17.8      14.9      10.7
 2006.9173   DEC    74.8      70.6      67.4      17.5      14.7      10.2
 2007.0007   JAN    74.2      70.3      67.3      17.4      14.5      10.1
 2007.0840   FEB    73.8      70.1      67.1      16.9      14.1       9.8
 2007.1673   MAR    73.5      69.9      67.1      16.4      13.7       9.6
 2007.2507   APR    73.3      69.8      67.0      15.9      13.2       9.3
 2007.3340   MAY    73.2      69.8      67.0      15.4      12.8       9.1
 2007.4173   JUN    73.4      69.9      67.1      14.9      12.4       8.9
 2007.5007   JUL    74.0      70.3      67.3      14.5      12.0       8.6
 2007.5840   AUG    74.8      70.7      67.4      14.1      11.6       8.4
 2007.6673   SEP    75.7      71.0      67.5      13.6      11.2       8.2
 2007.7507   OCT    76.7      71.5      67.6      13.2      10.9       8.0
 2007.8340   NOV    78.3      72.0      67.9      12.9      10.6       7.8
 2007.9173   DEC    79.6      72.7      68.1      12.5      10.3       7.6
 2008.0007   JAN    81.1      73.3      68.2      12.2      10.0       7.5
 2008.0840   FEB    83.4      74.2      68.2      11.9       9.7       7.3
 2008.1673   MAR    86.5      75.1      68.3      11.7       9.5       7.2
 2008.2507   APR    91.3      76.3      68.3      11.5       9.3       7.1
 2008.3340   MAY    95.8      77.7      68.3      11.3       9.2       7.0
 2008.4173   JUN    99.3      79.1      68.6      11.2       9.1       7.0
 2008.5007   JUL   104.6      80.8      68.6      11.1       9.0       6.9
 2008.5840   AUG   110.7      82.8      68.7      11.1       9.0       6.9
 2008.6673   SEP   116.6      84.9      68.9      11.3       9.1       6.9
 2008.7507   OCT   124.0      87.2      68.9      11.6       9.3       7.1
 2008.8340   NOV   132.5      89.6      69.0      11.7       9.4       7.4
 2008.9173   DEC   139.0      92.2      69.4      11.9       9.5       7.5
 2009.0007   JAN   143.6      95.0      69.8      12.0       9.6       7.5
 2009.0840   FEB   147.9      97.8      70.1      12.1       9.6       7.3
 2009.1673   MAR   152.2     100.6      70.8      12.2       9.7       7.2
 2009.2507   APR   157.0     103.3      71.2      12.6       9.8       7.0
 2009.3340   MAY   162.1     106.3      71.4      12.9      10.1       6.9
 2009.4173   JUN   167.2     109.5      72.1      13.3      10.5       7.1
 2009.5007   JUL   171.5     112.8      72.7      13.8      10.8       7.5
 2009.5840   AUG   177.3     115.9      73.3      14.6      11.1       7.8
 2009.6673   SEP   185.2     119.0      74.0      15.8      11.4       7.6
 2009.7507   OCT   190.2     122.2      74.3      16.2      11.6       7.6
 2009.8340   NOV   192.8     125.1      74.6      16.4      11.7       7.5
 2009.9173   DEC   195.4     127.5      75.0      16.9      11.9       7.5
 2010.0007   JAN   198.3     129.7      75.3      18.1      12.2       7.5
 2010.0840   FEB   202.9     131.9      75.5      19.0      12.6       7.6
 2010.1673   MAR   209.1     134.3      75.5      19.2      12.8       7.6
 2010.2507   APR   213.2     136.8      75.1      19.3      13.0       7.7
 2010.3340   MAY   215.9     139.1      74.9      19.1      13.2       7.6
 2010.4173   JUN   220.4     141.2      75.2      18.7      13.3       7.6
 2010.5007   JUL   225.0     143.1      75.5      18.6      13.3       7.7
 2010.5840   AUG   227.3     144.9      76.3      19.0      13.5       7.9
 2010.6673   SEP   228.4     146.5      77.5      18.9      13.6       8.1
 2010.7507   OCT   230.3     147.9      78.2      17.9      13.6       8.5
 2010.8340   NOV   232.4     148.8      79.1      18.0      13.8       8.6
 2010.9173   DEC   235.4     149.7      80.7      18.6      14.1       8.6
 2011.0007   JAN   238.7     150.1      82.6      19.2      14.3       8.9
 2011.0840   FEB   240.3     150.5      84.7      19.7      14.8       9.3
 2011.1673   MAR   238.7     150.8      85.9      20.4      15.1       9.5
 2011.2507   APR   236.9     151.0      86.9      20.4      15.2       9.5
 2011.3340   MAY   238.1     151.2      88.8      20.4      15.2       9.7
 2011.4173   JUN   238.7     150.6      90.2      20.6      15.2       9.9
 2011.5007   JUL   236.3     149.2      92.2      20.9      15.4      10.4
 2011.5840   AUG   232.9     148.1      93.5      21.3      15.4      11.0
 2011.6673   SEP   229.2     147.5      94.0      21.3      15.3      11.6
 2011.7507   OCT   227.4     147.4      95.3      21.5      15.1      11.2
 2011.8340   NOV   227.8     147.4      95.6      21.7      15.1      11.1
 2011.9173   DEC   227.9     147.1      95.2      22.1      15.1      10.6
 2012.0007   JAN   226.5     146.7      95.3      22.9      15.0      10.1
 2012.0840   FEB   224.8     146.3      96.8      22.6      14.7       9.8
 2012.1673   MAR   224.3     145.7      97.5      21.4      14.4      10.0
 2012.2507   APR   224.2     145.2      97.1      20.7      14.3      10.0
 2012.3340   MAY   223.6     144.8      96.3      20.1      14.2      10.2
 2012.4173   JUN   222.6     144.0      96.3      19.7      14.1      10.5
 2012.5007   JUL   220.3     143.0      96.8      19.6      14.1      10.5
 2012.5840   AUG   216.8     141.4      95.9      19.4      14.1      10.4
 2012.6673   SEP   213.9     139.8      95.4      19.2      14.4      10.4
 2012.7507   OCT   211.1     138.6      96.2      19.0      14.7      10.4
 2012.8340   NOV   207.6     137.6      97.2      19.0      14.9      10.2
 2012.9173   DEC   206.6     136.3      96.2      19.5      14.8       9.8
 2013.0007   JAN   204.5     134.6      94.6      20.5      14.9      10.1
 2013.0840   FEB   201.1     132.8      93.9      22.1      15.3      10.6
 2013.1673   MAR   197.5     131.4      93.6      23.5      15.6      10.6
 2013.2507   APR   195.2     130.3      91.9      24.1      15.8      10.8
 2013.3340   MAY   193.4     128.9      88.5      25.3      16.1      10.9
 2013.4173   JUN   189.6     127.1      87.7      25.8      16.3      11.1
 2013.5007   JUL   185.1     125.5      88.8      25.0      16.3      11.4
 2013.5840   AUG   180.7     124.2      88.3      24.9      16.2      11.6
 2013.6673   SEP   176.8     123.1      87.0      24.1      16.2      11.7
 2013.7507   OCT   174.6     122.0      86.0      22.2      16.1      11.7
 2013.8340   NOV   172.7     120.8      85.7      22.5      16.2      11.9
 2013.9173   DEC   168.6     119.2      84.8      23.2      16.3      11.7
 2014.0007   JAN   162.0     117.2      83.5      23.3      16.3      10.9
 2014.0840   FEB   156.1     115.4      82.5      22.8      16.1      10.6
 2014.1673   MAR   152.5     113.5      81.9      22.1      15.9      10.7
 2014.2507   APR   150.3     111.5      81.9      22.0      15.9      10.7
 2014.3340   MAY   148.0     109.8      81.6      22.9      16.1      10.6
 2014.4173   JUN   145.1     108.3      80.4      23.8      16.4      10.7
 2014.5007   JUL   142.0     106.9      80.5      24.0      16.6      10.7
 2014.5840   AUG   138.4     105.4      80.2      24.0      16.8      10.6
 2014.6673   SEP   134.5     103.9      79.5      24.0      16.9      10.5
 2014.7507   OCT   130.1     102.4      79.0      23.6      16.9      10.2
 2014.8340   NOV   124.1     100.8      78.2      22.7      16.9      10.3
 2014.9173   DEC   119.1      99.3      77.1      22.9      16.8      10.5
 2015.0007   JAN   118.2      98.0      75.4      23.1      16.9      11.3
 2015.0840   FEB   118.7      96.9      74.3      23.2      17.2      11.8
 2015.1673   MAR   119.3      95.9      73.6      22.6      17.3      11.9
 2015.2507   APR   119.6      95.0      72.8      21.6      17.2      12.1
 2015.3340   MAY   118.8      94.0      71.8      21.3      17.1      12.2
 2015.4173   JUN   117.4      92.9      71.3      21.8      16.9      12.4
 2015.5007   JUL   116.0      91.8      70.8      21.8      16.7      13.2
 2015.5840   AUG   113.9      90.7      70.4      22.2      16.8      13.0
 2015.6673   SEP   110.2      89.5      70.3      22.6      16.9      12.7
 2015.7507   OCT   105.1      88.2      70.4      22.4      16.9      13.0
 2015.8340   NOV   102.7      87.3      70.2      22.4      16.7      12.7
 2015.9173   DEC   101.7      86.6      70.1      22.8      16.5      12.4
 2016.0007   JAN   100.2      85.8      70.2      23.0      16.1      12.0
 2016.0840   FEB    98.1      84.7      70.1      23.6      15.8      11.1
 2016.1673   MAR    96.3      83.6      70.3      24.2      15.6      10.4
 2016.2507   APR    94.5      82.5      69.8      25.0      15.5      10.5
 2016.3340   MAY    93.4      81.8      69.6      25.5      15.5      10.6
 2016.4173   JUN    92.1      81.0      69.4      25.7      15.5      10.5
 2016.5007   JUL    91.7      80.3      69.3      25.6      15.4      10.6
 2016.5840   AUG    91.1      79.5      69.0      25.0      15.3      10.9
 2016.6673   SEP    90.5      78.8      68.7      24.1      15.1      11.0
 2016.7507   OCT    89.8      78.1      68.4      23.1      14.9      11.2
 2016.8340   NOV    88.9      77.5      68.3      22.6      15.0      11.1
 2016.9173   DEC    88.0      77.0      68.3      22.2      15.2      11.0
 2017.0007   JAN    87.1      76.4      68.2      21.9      15.4      11.1
 2017.0840   FEB    85.8      75.9      68.0      21.5      15.5      11.3
 2017.1673   MAR    84.4      75.4      67.7      20.8      15.5      11.4
 2017.2507   APR    82.3      74.8      67.5      20.0      15.3      11.4
 2017.3340   MAY    79.9      74.2      67.6      20.1      15.1      11.7
 2017.4173   JUN    78.4      73.5      67.4      20.2      14.9      11.9
 2017.5007   JUL    77.5      72.9      67.3      19.9      14.7      11.6
 2017.5840   AUG    77.0      72.4      67.2      19.5      14.6      11.5
 2017.6673   SEP    76.9      72.0      67.2      19.0      14.6      11.1
 2017.7507   OCT    76.7      71.6      67.2      18.2      14.6      10.6
 2017.8340   NOV    76.5      71.3      67.1      17.3      14.5       9.8
 2017.9173   DEC    76.2      71.0      67.1      17.4      14.4       9.4
 2018.0007   JAN    75.2      70.7      67.0      17.5      14.3       9.3
 2018.0840   FEB    74.2      70.4      67.0      17.6      14.2       9.3
 2018.1673   MAR    74.0      70.1      67.0      17.6      14.1       9.3
