  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% 

 2002.2507   APR   195.4     192.3     189.8      13.9      13.6      13.0
 2002.3340   MAY   195.8     188.6     182.9      14.5      13.7      12.4
 2002.4173   JUN   195.5     184.3     178.0      14.8      13.8      12.1
 2002.5007   JUL   193.0     180.2     171.5      15.4      14.0      12.2
 2002.5840   AUG   189.9     176.8     167.0      15.4      14.0      12.1
 2002.6673   SEP   186.9     173.6     162.5      15.8      14.1      11.9
 2002.7507   OCT   184.5     170.9     158.8      16.8      14.3      11.9
 2002.8340   NOV   183.1     167.9     155.6      17.8      14.5      12.0
 2002.9173   DEC   178.3     163.2     150.3      18.8      14.7      12.0
 2003.0007   JAN   171.5     157.2     143.3      19.1      14.8      12.1
 2003.0840   FEB   168.1     152.0     137.2      19.1      14.9      12.1
 2003.1673   MAR   166.6     148.1     132.9      19.0      14.9      11.8
 2003.2507   APR   165.3     144.9     130.2      19.3      14.8      11.6
 2003.3340   MAY   163.0     141.9     127.8      20.1      15.0      11.1
 2003.4173   JUN   159.1     139.6     126.8      20.7      15.3      10.6
 2003.5007   JUL   153.7     136.6     124.7      20.7      15.4      10.6
 2003.5840   AUG   151.5     133.4     121.1      21.2      15.5      10.8
 2003.6673   SEP   150.7     130.7     117.2      21.9      15.7      10.8
 2003.7507   OCT   150.1     127.8     112.3      22.0      15.8      10.9
 2003.8340   NOV   147.7     123.9     107.5      21.9      15.9      11.3
 2003.9173   DEC   144.1     120.4     103.9      22.3      16.0      11.3
 2004.0007   JAN   142.6     118.5     102.0      22.7      16.3      11.8
 2004.0840   FEB   141.7     117.8     101.6      22.9      16.7      12.2
 2004.1673   MAR   139.6     116.9     101.4      22.3      17.0      12.2
 2004.2507   APR   137.1     115.9     101.1      21.5      17.1      12.3
 2004.3340   MAY   135.2     114.5     100.1      21.3      17.0      12.2
 2004.4173   JUN   133.7     112.5      97.9      21.8      16.9      12.3
 2004.5007   JUL   131.7     109.9      95.5      21.8      16.9      13.1
 2004.5840   AUG   128.4     107.5      93.1      22.6      17.1      13.6
 2004.6673   SEP   124.8     105.1      91.5      23.0      17.2      13.3
 2004.7507   OCT   120.6     102.7      90.1      22.6      17.0      13.3
 2004.8340   NOV   116.8     100.7      89.1      22.5      16.8      12.8
 2004.9173   DEC   114.9      99.4      88.3      22.7      16.4      12.4
 2005.0007   JAN   113.4      97.9      87.2      22.8      16.0      11.7
 2005.0840   FEB   110.4      95.7      85.9      23.4      15.7      10.7
 2005.1673   MAR   106.9      93.2      84.1      23.9      15.3       9.7
 2005.2507   APR   104.3      90.7      81.5      24.4      15.1       9.5
 2005.3340   MAY   102.0      88.6      79.4      24.8      15.1       9.4
 2005.4173   JUN    99.5      86.9      77.9      25.1      15.0       9.3
 2005.5007   JUL    97.3      85.8      77.1      25.0      15.0       9.6
 2005.5840   AUG    96.6      85.0      76.6      24.6      15.0      10.0
 2005.6673   SEP    96.1      84.4      75.8      23.9      14.9      10.6
 2005.7507   OCT    94.4      83.3      75.1      23.1      14.9      11.1
 2005.8340   NOV    92.7      82.2      74.5      22.8      15.1      11.5
 2005.9173   DEC    91.0      81.1      73.8      22.6      15.4      11.2
 2006.0007   JAN    89.3      80.1      73.2      22.5      15.8      11.3
 2006.0840   FEB    87.7      79.0      72.5      22.2      16.0      11.5
 2006.1673   MAR    86.1      78.0      71.9      21.6      16.0      11.9
 2006.2507   APR    84.6      77.0      71.3      20.9      15.9      11.9
 2006.3340   MAY    83.1      76.1      70.8      19.8      15.7      12.1
 2006.4173   JUN    81.7      75.2      70.2      19.5      15.6      12.3
 2006.5007   JUL    80.4      74.3      69.7      19.2      15.4      12.1
 2006.5840   AUG    79.1      73.6      69.3      18.7      15.4      12.1
 2006.6673   SEP    78.0      72.8      68.8      18.1      15.4      12.2
 2006.7507   OCT    77.0      72.2      68.4      18.2      15.5      12.4
 2006.8340   NOV    76.0      71.6      68.1      18.3      15.5      13.0
 2006.9173   DEC    75.2      71.0      67.8      18.0      15.3      12.9
 2007.0007   JAN    74.5      70.6      67.5      17.8      15.1      12.5
 2007.0840   FEB    74.0      70.3      67.3      17.5      15.0      12.5
 2007.1673   MAR    73.6      70.0      67.1      17.8      14.9      12.6
 2007.2507   APR    73.3      69.8      67.0      17.2      14.4      12.1
 2007.3340   MAY    73.2      69.8      67.0      16.6      13.9      11.6
 2007.4173   JUN    73.4      69.9      67.1      16.0      13.4      11.1
 2007.5007   JUL    74.0      70.3      67.3      15.4      12.9      10.6
 2007.5840   AUG    74.8      70.7      67.4      14.9      12.4      10.2
 2007.6673   SEP    75.7      71.0      67.5      14.4      11.9       9.7
 2007.7507   OCT    76.7      71.5      67.6      13.9      11.5       9.3
 2007.8340   NOV    78.3      72.0      67.9      13.4      11.0       8.9
 2007.9173   DEC    79.6      72.7      68.1      13.0      10.7       8.5
 2008.0007   JAN    81.1      73.3      68.2      12.6      10.3       8.2
 2008.0840   FEB    83.4      74.2      68.2      12.2      10.0       7.9
 2008.1673   MAR    86.5      75.1      68.3      11.9       9.7       7.6
 2008.2507   APR    91.3      76.3      68.3      11.6       9.4       7.3
 2008.3340   MAY    95.8      77.7      68.3      11.4       9.3       7.2
 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
