  TABLE 3 ESTIMATES OF 13-MONTH SMOOTH SOLAR ACTIVITY FOR
  BALANCE OF CYCLE 25 WITH A MEAN CYCLE GIVEN FOR CYCLE 26

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

 2019.9173   DEC    69.7      69.5      69.3       5.7       5.5       5.2
 2020.0007   JAN    70.2      69.8      69.2       5.9       5.6       5.0
 2020.0840   FEB    71.1      70.1      69.2       6.0       5.6       5.0
 2020.1673   MAR    72.1      70.5      69.4       6.0       5.5       4.9
 2020.2507   APR    73.2      70.9      69.4       6.1       5.6       4.9
 2020.3340   MAY    74.9      71.4      69.4       6.2       5.6       4.8
 2020.4173   JUN    76.1      72.0      69.2       6.6       5.6       4.5
 2020.5007   JUL    77.3      72.7      69.3       7.1       5.6       4.3
 2020.5840   AUG    79.4      73.5      69.5       7.2       5.6       4.1
 2020.6673   SEP    82.0      74.4      69.4       7.4       5.8       4.1
 2020.7507   OCT    86.1      75.4      69.4       7.5       6.0       4.2
 2020.8340   NOV    90.0      76.7      69.3       7.6       6.0       4.4
 2020.9173   DEC    93.1      78.1      69.0       7.5       5.9       4.1
 2021.0007   JAN    97.7      79.7      68.9       7.5       5.8       3.8
 2021.0840   FEB   102.9      81.4      68.8       7.5       5.8       3.7
 2021.1673   MAR   108.2      83.4      68.2       8.0       5.7       3.2
 2021.2507   APR   114.6      85.4      67.7       8.9       5.8       3.0
 2021.3340   MAY   122.0      87.6      67.5       9.8       6.1       3.0
 2021.4173   JUN   127.8      89.9      67.8      10.0       6.2       3.0
 2021.5007   JUL   131.9      92.5      68.6       9.9       6.4       3.0
 2021.5840   AUG   135.7      95.1      68.9       9.4       6.4       3.0
 2021.6673   SEP   139.6      97.7      69.0       8.8       6.4       3.2
 2021.7507   OCT   144.0     100.3      69.8       8.2       6.3       3.4
 2021.8340   NOV   149.3     103.1      70.9       8.4       6.4       3.5
 2021.9173   DEC   155.9     106.0      71.3       9.3       6.6       3.9
 2022.0007   JAN   162.4     108.9      72.1      10.5       7.0       4.6
 2022.0840   FEB   170.1     111.8      73.3      10.9       7.5       5.2
 2022.1673   MAR   177.0     114.7      74.6      10.8       7.9       5.4
 2022.2507   APR   181.5     117.8      76.3      11.0       8.2       5.7
 2022.3340   MAY   183.7     120.7      77.6      11.6       8.4       5.4
 2022.4173   JUN   185.3     123.1      79.3      12.2       8.5       4.9
 2022.5007   JUL   187.8     125.2      80.6      12.4       8.7       4.9
 2022.5840   AUG   192.5     127.3      81.4      12.9       9.0       4.9
 2022.6673   SEP   198.7     129.7      82.2      13.7       9.4       5.1
 2022.7507   OCT   203.4     132.0      81.7      14.4       9.6       4.8
 2022.8340   NOV   206.5     134.2      81.8      14.7       9.7       4.4
 2022.9173   DEC   210.5     136.1      82.3      14.6      10.0       4.1
 2023.0007   JAN   214.7     137.8      82.5      14.2      10.3       4.0
 2023.0840   FEB   216.9     139.4      83.6      14.0      10.3       3.9
 2023.1673   MAR   218.3     140.8      85.9      14.3      10.2       3.9
 2023.2507   APR   220.4     141.9      87.1      15.1      10.1       3.6
 2023.3340   MAY   221.9     142.7      86.5      15.3      10.1       3.5
 2023.4173   JUN   223.8     143.4      85.3      15.0      10.3       4.1
 2023.5007   JUL   226.3     143.7      85.1      14.9      10.5       4.7
 2023.5840   AUG   227.5     143.9      85.7      14.5      10.5       5.0
 2023.6673   SEP   227.3     144.3      86.8      13.9      10.3       5.0
 2023.7507   OCT   226.7     144.5      88.7      13.7      10.2       5.1
 2023.8340   NOV   227.4     144.6      90.7      13.8      10.3       5.2
 2023.9173   DEC   227.1     144.1      92.0      13.5      10.2       5.1
 2024.0007   JAN   224.1     143.0      92.9      13.3      10.0       5.4
 2024.0840   FEB   220.6     142.4      93.7      12.9       9.7       5.7
 2024.1673   MAR   217.0     142.1      94.5      12.9       9.3       5.6
 2024.2507   APR   215.8     142.4      95.5      13.1       9.1       5.5
 2024.3340   MAY   215.9     142.8      96.8      14.3       9.2       5.3
 2024.4173   JUN   215.5     142.8      98.2      15.2       9.2       5.2
 2024.5007   JUL   213.8     142.7      99.1      15.7       9.3       5.6
 2024.5840   AUG   211.7     142.4      99.5      16.6       9.4       5.7
 2024.6673   SEP   210.2     142.0      99.9      16.8       9.4       5.6
 2024.7507   OCT   209.4     141.9      99.3      16.3       9.5       5.8
 2024.8340   NOV   209.2     141.6      98.4      16.3       9.7       6.0
 2024.9173   DEC   208.4     140.9      98.2      15.4       9.6       6.1
 2025.0007   JAN   206.6     139.8      98.6      13.8       9.5       5.8
 2025.0840   FEB   203.7     138.3      98.5      13.8       9.7       5.7
 2025.1673   MAR   201.3     136.7      98.2      14.2      10.0       5.7
 2025.2507   APR   198.5     135.2      97.0      14.4      10.2       6.0
 2025.3340   MAY   194.3     134.0      96.4      15.2      10.5       6.6
 2025.4173   JUN   190.5     132.6      96.5      15.7      10.8       6.9
 2025.5007   JUL   186.4     131.0      96.1      16.3      10.6       6.7
 2025.5840   AUG   182.3     129.2      96.1      16.6      10.6       6.9
 2025.6673   SEP   179.5     127.8      96.4      17.0      10.8       7.3
 2025.7507   OCT   176.7     126.6      96.0      17.0      10.9       7.1
 2025.8340   NOV   174.1     125.6      96.0      16.3      10.9       6.9
 2025.9173   DEC   170.8     124.1      96.2      15.3      10.8       6.8
 2026.0007   JAN   167.1     122.3      94.9      14.0      10.9       6.7
 2026.0840   FEB   164.5     121.2      94.2      13.5      11.3       7.1
 2026.1673   MAR   162.2     120.3      92.6      14.3      11.7       7.6
 2026.2507   APR   160.0     119.0      90.6      15.0      12.0       8.5
 2026.3340   MAY   156.6     117.5      90.0      15.3      12.2       8.2
 2026.4173   JUN   151.9     115.8      89.8      14.9      12.4       8.5
 2026.5007   JUL   147.2     114.2      88.9      15.9      12.6       9.0
 2026.5840   AUG   142.9     112.7      87.8      17.3      12.7       9.3
 2026.6673   SEP   138.9     110.8      86.5      18.1      12.8       9.9
 2026.7507   OCT   135.2     108.9      85.5      18.4      13.0       9.3
 2026.8340   NOV   132.7     107.2      85.2      18.3      13.3       9.2
 2026.9173   DEC   130.1     105.6      85.1      18.4      13.5       8.9
 2027.0007   JAN   127.0     104.0      84.6      18.3      13.6       8.5
 2027.0840   FEB   126.1     102.5      84.6      18.5      13.5       8.4
 2027.1673   MAR   126.2     101.2      84.2      18.9      13.4       8.3
 2027.2507   APR   126.1      99.8      82.8      19.2      13.2       8.0
 2027.3340   MAY   125.8      98.3      81.0      19.7      12.9       7.0
 2027.4173   JUN   125.3      97.0      80.0      20.0      12.4       6.0
 2027.5007   JUL   124.1      95.8      78.8      20.3      12.0       5.6
 2027.5840   AUG   123.3      94.6      77.9      20.6      11.8       5.5
 2027.6673   SEP   122.3      93.6      77.4      20.8      11.7       5.4
 2027.7507   OCT   120.2      92.7      77.2      20.6      11.5       5.4
 2027.8340   NOV   118.0      91.8      76.6      19.9      11.3       5.3
 2027.9173   DEC   116.4      90.7      75.7      18.9      11.0       5.5
 2028.0007   JAN   115.6      89.7      74.6      18.2      11.0       5.8
 2028.0840   FEB   114.6      88.9      73.7      18.0      11.2       5.9
 2028.1673   MAR   112.1      88.0      73.3      17.8      11.4       5.4
 2028.2507   APR   108.6      86.9      73.1      17.7      11.7       4.9
 2028.3340   MAY   106.4      85.9      72.8      17.6      12.0       5.0
 2028.4173   JUN   104.3      85.1      72.5      18.0      12.2       5.5
 2028.5007   JUL   102.7      84.3      72.3      18.4      12.2       6.1
 2028.5840   AUG   101.2      83.4      72.2      18.7      12.1       6.5
 2028.6673   SEP    99.1      82.4      71.8      18.8      12.0       6.5
 2028.7507   OCT    96.8      81.4      71.5      18.6      12.0       6.7
 2028.8340   NOV    95.8      80.7      71.4      18.4      12.1       6.8
 2028.9173   DEC    95.2      80.1      71.2      18.1      12.5       7.2
 2029.0007   JAN    93.8      79.5      71.1      17.6      12.7       7.5
 2029.0840   FEB    91.7      78.7      70.8      16.7      12.7       7.5
 2029.1673   MAR    89.9      78.0      70.4      16.9      12.5       7.4
 2029.2507   APR    88.4      77.3      70.1      16.9      12.1       7.1
 2029.3340   MAY    86.9      76.6      70.0      16.9      11.8       6.7
 2029.4173   JUN    85.8      76.1      69.9      16.9      11.8       6.2
 2029.5007   JUL    85.1      75.6      69.9      17.2      11.8       6.1
 2029.5840   AUG    83.8      75.2      69.7      17.6      12.0       6.5
 2029.6673   SEP    82.1      74.7      69.4      17.6      11.9       6.6
 2029.7507   OCT    80.1      74.2      69.4      17.3      11.7       6.5
 2029.8340   NOV    79.2      73.5      69.2      17.0      11.5       6.5
 2029.9173   DEC    78.1      72.9      68.9      15.9      11.0       6.4
 2030.0007   JAN    77.1      72.3      68.5      14.4      10.3       6.4
 2030.0840   FEB    76.5      71.9      68.2      13.1       9.8       6.3
 2030.1673   MAR    76.3      71.6      68.1      13.1       9.4       6.1
 2030.2507   APR    76.0      71.2      68.0      12.8       9.1       6.0
 2030.3340   MAY    75.6      70.9      67.9      12.5       8.9       5.9
 2030.4173   JUN    74.9      70.6      67.5      12.3       8.7       5.7
 2030.5007   JUL    73.9      70.3      67.3      12.0       8.5       5.3
 2030.5840   AUG    72.8      70.0      67.1      11.2       8.1       4.7
 2030.6673   SEP    72.5      69.8      66.9      10.7       7.9       4.2
 2030.7507   OCT    72.4      69.6      67.0      10.5       7.8       4.0
 2030.8340   NOV    72.4      69.6      67.0      10.6       7.9       4.0
 2030.9173   DEC    72.6      69.8      67.0      10.8       8.0       3.9
 2031.0007   JAN    73.4      70.1      67.0      11.2       8.2       3.9
 2031.0840   FEB    74.3      70.5      67.2      11.4       8.4       3.9
 2031.1673   MAR    75.1      70.9      67.2      11.6       8.5       3.6
 2031.2507   APR    76.3      71.3      67.4      11.8       8.6       3.5
 2031.3340   MAY    78.0      71.9      67.6      11.9       8.8       3.4
 2031.4173   JUN    79.5      72.6      67.7      12.1       8.9       3.4
 2031.5007   JUL    80.9      73.4      67.8      12.4       9.2       3.3
 2031.5840   AUG    83.2      74.2      68.0      12.8       9.5       3.4
 2031.6673   SEP    86.2      75.2      68.1      13.2       9.9       3.8
 2031.7507   OCT    90.8      76.4      68.4      13.8      10.4       4.2
 2031.8340   NOV    95.1      77.8      68.5      14.6      10.6       4.5
 2031.9173   DEC    98.5      79.4      68.5      15.7      10.9       4.6
 2032.0007   JAN   103.6      81.1      68.5      16.1      11.1       4.8
 2032.0840   FEB   109.2      83.1      68.5      16.3      11.3       5.0
 2032.1673   MAR   115.2      85.2      68.4      16.9      11.4       5.0
 2032.2507   APR   122.0      87.5      68.6      18.0      11.6       5.2
 2032.3340   MAY   130.1      89.9      68.7      18.9      11.9       5.4
 2032.4173   JUN   136.6      92.5      69.0      19.1      12.1       5.6
 2032.5007   JUL   141.4      95.3      69.3      19.2      12.3       5.8
 2032.5840   AUG   145.9      98.1      69.4      19.0      12.6       6.0
 2032.6673   SEP   150.4     100.8      69.6      18.6      12.7       6.1
 2032.7507   OCT   155.4     103.6      70.1      18.5      12.7       6.1
 2032.8340   NOV   160.9     106.7      70.8      18.9      12.8       6.1
 2032.9173   DEC   166.3     109.8      71.0      18.8      12.9       6.3
 2033.0007   JAN   171.1     113.0      71.4      17.8      13.0       6.5
 2033.0840   FEB   177.2     116.2      71.7      17.9      13.2       6.7
 2033.1673   MAR   184.3     119.2      72.3      18.4      13.4       7.0
 2033.2507   APR   189.1     122.5      73.1      19.1      13.7       7.0
 2033.3340   MAY   192.1     125.6      73.5      19.6      14.2       7.0
 2033.4173   JUN   195.2     128.0      74.3      20.3      14.5       7.0
 2033.5007   JUL   198.1     130.2      74.9      20.3      14.5       7.2
 2033.5840   AUG   203.0     132.5      75.3      20.3      14.5       7.6
 2033.6673   SEP   208.8     135.1      75.9      20.5      14.6       8.0
 2033.7507   OCT   213.0     137.6      76.2      20.8      14.8       8.0
 2033.8340   NOV   215.9     139.9      76.5      21.2      14.8       8.0
 2033.9173   DEC   219.7     141.8      76.5      21.3      14.6       8.3
 2034.0007   JAN   223.3     143.7      76.5      21.4      14.6       8.6
 2034.0840   FEB   224.8     145.3      76.8      21.6      14.6       8.5
 2034.1673   MAR   225.6     146.8      77.3      22.0      14.5       8.4
 2034.2507   APR   228.0     148.0      77.8      22.7      14.4       8.6
 2034.3340   MAY   230.3     148.7      78.5      22.4      14.1       8.6
 2034.4173   JUN   233.0     149.3      79.8      21.3      13.8       8.6
 2034.5007   JUL   235.9     149.6      80.6      20.6      13.7       8.4
 2034.5840   AUG   237.0     149.9      81.6      20.1      13.6       8.1
 2034.6673   SEP   234.9     150.2      83.1      19.7      13.5       7.7
 2034.7507   OCT   232.6     150.3      84.6      19.6      13.5       7.5
 2034.8340   NOV   233.6     150.3      86.2      19.3      13.5       7.8
 2034.9173   DEC   234.0     149.6      87.0      19.1      13.7       7.8
 2035.0007   JAN   231.8     148.5      88.2      18.9      13.9       7.6
 2035.0840   FEB   228.8     147.7      89.8      18.9      14.0       7.5
 2035.1673   MAR   225.5     147.5      90.9      19.5      13.9       7.3
 2035.2507   APR   224.0     147.8      93.0      20.4      14.0       7.1
 2035.3340   MAY   225.0     148.1      94.3      22.0      14.4       7.1
 2035.4173   JUN   224.9     148.1      95.7      23.4      14.6       7.0
 2035.5007   JUL   223.7     147.9      96.0      24.0      14.8       7.2
 2035.5840   AUG   222.7     147.5      95.6      25.1      15.1       7.3
 2035.6673   SEP   222.5     147.1      95.5      25.7      15.3       7.1
 2035.7507   OCT   222.1     147.0      97.0      24.9      15.3       7.1
 2035.8340   NOV   221.5     146.6      97.8      24.8      15.4       6.9
 2035.9173   DEC   220.9     145.8      97.3      24.0      15.3       6.4
 2036.0007   JAN   218.8     144.6      96.5      22.2      15.3       6.1
 2036.0840   FEB   215.7     143.0      96.4      22.5      15.5       6.2
 2036.1673   MAR   213.2     141.4      96.9      23.2      15.6       6.4
 2036.2507   APR   210.6     140.0      96.4      23.2      15.7       6.6
 2036.3340   MAY   206.4     138.7      95.7      22.7      15.7       6.9
 2036.4173   JUN   203.6     137.3      96.3      22.0      15.6       7.4
 2036.5007   JUL   202.2     135.5      97.2      21.9      15.7       7.6
 2036.5840   AUG   198.4     133.6      96.3      22.7      15.9       7.9
 2036.6673   SEP   194.7     131.8      94.6      23.7      16.2       8.4
 2036.7507   OCT   192.8     130.5      93.8      23.9      16.4       8.7
 2036.8340   NOV   191.1     129.2      93.6      23.8      16.6       9.1
 2036.9173   DEC   187.6     127.6      91.8      23.8      16.6       9.5
 2037.0007   JAN   183.5     125.7      88.5      23.4      16.5       9.9
 2037.0840   FEB   179.5     124.5      88.0      22.5      16.5      10.3
 2037.1673   MAR   175.8     123.4      88.7      22.7      16.4      10.7
 2037.2507   APR   173.5     122.0      87.3      23.0      16.5      11.2
 2037.3340   MAY   171.4     120.4      86.3      23.0      16.6      11.6
 2037.4173   JUN   167.1     118.6      85.7      22.4      16.7      11.8
 2037.5007   JUL   160.8     116.8      84.9      21.5      16.5      11.9
 2037.5840   AUG   155.0     115.1      83.7      21.2      16.4      11.8
 2037.6673   SEP   151.3     113.2      82.7      21.7      16.2      11.5
 2037.7507   OCT   148.8     111.3      82.3      21.7      16.0      11.4
 2037.8340   NOV   146.2     109.6      82.2      22.1      16.1      11.5
 2037.9173   DEC   143.2     108.1      82.0      22.5      16.2      11.3
 2038.0007   JAN   139.6     106.5      81.0      22.3      16.2      11.1
 2038.0840   FEB   135.9     104.9      80.6      22.3      16.0      10.9
 2038.1673   MAR   132.4     103.4      80.6      22.7      15.8      10.7
 2038.2507   APR   128.4     101.9      80.0      22.9      15.5      10.7
 2038.3340   MAY   123.3     100.2      79.1      23.4      15.3      10.5
 2038.4173   JUN   119.4      98.8      77.7      24.0      15.1      10.2
 2038.5007   JUL   118.5      97.5      75.6      24.7      14.9      10.1
 2038.5840   AUG   118.7      96.3      74.6      25.3      14.8      10.0
 2038.6673   SEP   119.2      95.2      74.1      25.5      14.8      10.2
 2038.7507   OCT   119.5      94.3      73.8      25.3      14.7      10.5
 2038.8340   NOV   118.8      93.3      73.5      24.8      14.5      10.3
 2038.9173   DEC   117.3      92.1      73.1      23.9      14.3      10.0
 2039.0007   JAN   115.7      91.0      72.7      23.0      14.1       9.4
 2039.0840   FEB   113.5      90.0      72.0      22.5      14.2       8.8
 2039.1673   MAR   110.0      89.0      71.4      22.1      14.2       8.1
 2039.2507   APR   105.8      87.8      71.1      21.8      14.4       7.5
 2039.3340   MAY   103.2      86.8      70.8      21.4      14.5       7.4
 2039.4173   JUN   101.6      86.0      70.5      20.8      14.4       7.7
 2039.5007   JUL   100.1      85.1      70.6      20.0      14.3       8.1
 2039.5840   AUG    98.1      84.1      70.4      20.0      14.1       8.5
 2039.6673   SEP    96.5      83.0      69.9      20.2      13.9       8.5
 2039.7507   OCT    94.6      82.0      69.6      19.8      13.8       8.5
 2039.8340   NOV    93.5      81.3      69.5      19.4      13.6       8.4
 2039.9173   DEC    93.1      80.7      69.5      18.9      13.6       8.4
 2040.0007   JAN    92.3      80.0      69.3      18.2      13.6       8.3
 2040.0840   FEB    91.2      79.3      69.1      17.3      13.5       8.0
 2040.1673   MAR    90.3      78.5      68.8      17.3      13.4       7.6
 2040.2507   APR    89.5      77.8      68.6      17.4      13.2       7.1
 2040.3340   MAY    88.4      77.2      68.4      17.5      13.1       6.7
 2040.4173   JUN    87.4      76.6      68.4      17.5      13.0       6.6
 2040.5007   JUL    86.6      76.1      68.5      17.7      12.8       6.5
 2040.5840   AUG    85.2      75.6      68.5      18.0      12.8       6.6
 2040.6673   SEP    83.9      75.1      68.5      17.9      12.6       6.5
 2040.7507   OCT    82.0      74.6      68.4      17.6      12.3       6.4
 2040.8340   NOV    79.9      73.9      68.3      17.3      12.1       6.4
 2040.9173   DEC    78.4      73.2      68.1      16.3      11.7       6.2
 2041.0007   JAN    77.5      72.6      67.8      14.9      11.2       6.1
 2041.0840   FEB    77.0      72.1      67.7      13.8      10.9       6.1
 2041.1673   MAR    76.9      71.8      67.6      13.9      10.5       6.1
 2041.2507   APR    76.6      71.5      67.5      13.6      10.2       6.2
 2041.3340   MAY    76.5      71.1      67.3      13.2       9.8       6.2
 2041.4173   JUN    76.1      70.8      67.1      12.9       9.5       6.0
 2041.5007   JUL    75.1      70.5      67.1      12.6       9.3       5.9
 2041.5840   AUG    74.2      70.2      67.0      11.9       9.1       5.7
 2041.6673   SEP    74.0      70.0      67.0      11.4       8.9       5.2
