  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% 

 2020.6670   SEP    76.4      75.3      74.6       5.8       5.5       5.3
 2020.7503   OCT    79.1      76.4      74.8       6.8       5.7       5.2
 2020.8337   NOV    82.1      77.8      75.9       7.6       6.0       5.1
 2020.9170   DEC    84.9      79.4      76.9       8.0       6.2       5.0
 2021.0003   JAN    87.3      81.2      78.0       8.2       6.2       4.7
 2021.0837   FEB    90.6      83.2      78.8       8.8       6.2       4.5
 2021.1670   MAR    94.6      85.4      79.3       9.5       6.3       4.1
 2021.2503   APR    98.7      87.9      79.8      10.3       6.4       3.7
 2021.3337   MAY   103.7      90.6      81.2      11.5       6.7       3.6
 2021.4170   JUN   109.7      93.3      83.0      12.4       7.0       3.7
 2021.5003   JUL   115.0      96.2      83.3      12.7       7.2       3.7
 2021.5837   AUG   120.3      99.3      83.9      12.7       7.4       3.7
 2021.6670   SEP   125.0     102.3      85.4      12.1       7.3       3.7
 2021.7503   OCT   129.6     105.3      87.1      11.5       7.2       3.8
 2021.8337   NOV   135.5     108.3      88.8      10.9       7.1       4.0
 2021.9170   DEC   142.2     111.6      90.2      10.5       7.2       4.0
 2022.0003   JAN   149.0     115.1      91.3      10.5       7.3       4.3
 2022.0837   FEB   156.5     118.7      92.5      10.5       7.6       5.1
 2022.1670   MAR   164.8     122.1      93.6      10.8       7.9       5.5
 2022.2503   APR   172.8     125.4      95.5      10.7       8.3       6.1
 2022.3337   MAY   178.4     128.9      97.8      10.7       8.4       6.2
 2022.4170   JUN   182.4     132.2      99.9      11.3       8.7       5.7
 2022.5003   JUL   186.0     134.6     101.1      12.1       8.9       5.5
 2022.5837   AUG   189.4     136.9     101.5      12.2       9.1       5.3
 2022.6670   SEP   194.2     139.4     102.1      12.8       9.4       5.5
 2022.7503   OCT   200.6     142.1     103.6      13.7       9.9       5.8
 2022.8337   NOV   205.7     144.7     104.6      14.4      10.1       5.5
 2022.9170   DEC   209.3     147.0     105.2      14.8      10.2       5.3
 2023.0003   JAN   213.8     149.0     106.5      15.3      10.5       5.0
 2023.0837   FEB   218.5     150.8     109.4      15.8      10.7       4.7
 2023.1670   MAR   221.3     152.3     112.2      16.1      10.8       4.7
 2023.2503   APR   223.6     153.7     115.6      16.7      10.9       4.8
 2023.3337   MAY   225.7     154.8     119.5      17.7      10.9       4.9
 2023.4170   JUN   227.3     155.5     119.7      17.9      11.0       5.0
 2023.5003   JUL   229.1     155.9     118.2      17.3      11.1       5.3
 2023.5837   AUG   231.2     156.1     116.2      16.9      11.2       5.8
 2023.6670   SEP   232.8     156.2     115.0      16.4      11.1       6.0
 2023.7503   OCT   232.6     156.4     117.0      15.8      10.9       6.0
 2023.8337   NOV   231.9     156.3     118.4      15.8      10.9       6.2
 2023.9170   DEC   232.5     156.0     119.6      15.6      11.0       6.3
 2024.0003   JAN   232.1     155.3     118.9      14.9      10.8       6.2
 2024.0837   FEB   229.0     154.0     117.0      14.1      10.7       6.5
 2024.1670   MAR   225.4     153.2     115.2      13.4      10.3       6.7
 2024.2503   APR   221.8     152.9     112.7      13.0       9.8       6.1
 2024.3337   MAY   219.7     153.2     110.5      13.2       9.6       5.8
 2024.4170   JUN   219.2     153.5     109.0      14.1       9.7       5.5
 2024.5003   JUL   218.3     153.5     107.7      15.0       9.7       5.2
 2024.5837   AUG   216.4     153.1     104.3      15.5       9.8       5.4
 2024.6670   SEP   214.5     152.7     101.0      16.2       9.8       5.2
 2024.7503   OCT   213.6     152.3      97.6      16.3       9.8       5.2
 2024.8337   NOV   213.0     152.1      96.3      15.8       9.9       6.0
 2024.9170   DEC   213.4     151.7      95.5      15.5       9.8       6.2
 2025.0003   JAN   212.3     150.8      94.2      14.5       9.6       6.3
 2025.0837   FEB   209.4     149.6      93.0      14.2       9.6       6.3
 2025.1670   MAR   206.6     147.9      91.3      14.2       9.9       7.1
 2025.2503   APR   203.9     146.2      90.1      15.1      10.2       7.3
 2025.3337   MAY   201.2     144.7      88.1      15.2      10.4       7.4
 2025.4170   JUN   197.6     143.5      87.4      15.6      10.7       7.3
 2025.5003   JUL   194.8     141.8      87.3      16.1      10.9       7.5
 2025.5837   AUG   191.4     139.9      87.4      15.2      10.6       7.3
 2025.6670   SEP   187.2     137.6      88.0      15.0      10.7       7.2
 2025.7503   OCT   184.1     135.6      88.8      16.0      11.1       7.1
 2025.8337   NOV   181.2     133.9      89.3      16.0      11.1       7.2
 2025.9170   DEC   179.9     132.5      90.0      15.9      11.2       7.0
 2026.0003   JAN   177.1     130.6      90.9      16.0      11.3       7.0
 2026.0837   FEB   173.4     128.6      90.8      16.1      11.6       6.9
 2026.1670   MAR   169.8     127.2      90.6      15.4      12.0       7.4
 2026.2503   APR   166.6     126.0      90.4      15.4      12.3       7.9
 2026.3337   MAY   164.6     124.5      90.1      16.1      12.7       8.8
 2026.4170   JUN   162.8     122.8      89.6      16.6      13.0       8.7
 2026.5003   JUL   159.2     120.8      89.5      16.5      13.4       9.2
 2026.5837   AUG   153.7     118.8      88.9      16.8      13.5       9.3
 2026.6670   SEP   148.4     117.0      87.8      18.0      13.5       9.4
 2026.7503   OCT   144.8     115.0      86.5      18.6      13.4       9.5
 2026.8337   NOV   142.3     113.1      85.5      19.0      13.6       9.8
 2026.9170   DEC   140.2     111.4      85.3      19.2      13.8       9.8
 2027.0003   JAN   137.5     109.9      84.7      19.5      13.9      10.2
 2027.0837   FEB   134.2     108.2      84.2      19.2      13.8       9.7
 2027.1670   MAR   131.4     106.5      84.1      19.3      13.7       9.5
 2027.2503   APR   128.5     105.0      83.2      19.7      13.6       9.4
 2027.3337   MAY   125.6     103.2      80.8      19.9      13.3       8.9
 2027.4170   JUN   123.7     101.4      79.4      20.3      12.9       7.9
 2027.5003   JUL   123.2      99.8      78.0      20.8      12.5       7.0
 2027.5837   AUG   122.6      98.5      76.7      21.4      12.3       7.1
 2027.6670   SEP   122.2      97.3      75.8      22.0      12.3       7.2
 2027.7503   OCT   121.1      96.1      75.3      22.3      12.4       7.2
 2027.8337   NOV   119.2      95.3      75.1      22.1      12.1       7.2
 2027.9170   DEC   117.8      94.2      74.6      21.5      11.9       7.1
 2028.0003   JAN   116.7      92.8      73.8      20.7      11.8       6.5
 2028.0837   FEB   115.6      91.6      73.2      20.0      11.8       6.1
 2028.1670   MAR   114.0      90.6      72.6      19.8      12.1       5.9
 2028.2503   APR   110.6      89.4      72.3      19.5      12.2       5.3
 2028.3337   MAY   106.9      88.1      72.1      19.4      12.4       4.9
 2028.4170   JUN   103.9      87.0      71.7      19.2      12.7       5.0
 2028.5003   JUL   102.0      86.2      71.3      18.7      12.8       5.5
 2028.5837   AUG   100.8      85.2      71.1      18.7      12.7       5.9
 2028.6670   SEP    98.5      84.2      70.9      18.9      12.5       6.2
 2028.7503   OCT    97.0      83.1      70.4      19.0      12.3       6.2
 2028.8337   NOV    95.2      82.2      70.3      18.8      12.3       6.4
 2028.9170   DEC    94.3      81.5      70.3      18.6      12.4       6.7
 2029.0003   JAN    93.7      80.8      70.3      18.3      12.7       7.2
 2029.0837   FEB    92.9      80.2      70.4      17.7      13.0       7.5
 2029.1670   MAR    91.1      79.5      70.3      16.9      13.0       7.6
 2029.2503   APR    90.0      78.8      70.1      16.9      12.7       7.4
 2029.3337   MAY    89.1      78.1      70.0      16.9      12.5       7.1
 2029.4170   JUN    88.0      77.5      69.9      16.9      12.2       6.8
 2029.5003   JUL    87.1      76.9      69.8      17.1      12.2       6.3
 2029.5837   AUG    86.3      76.3      69.6      17.5      12.4       6.4
 2029.6670   SEP    85.0      75.8      69.5      17.8      12.3       6.6
 2029.7503   OCT    83.5      75.3      69.4      17.8      12.2       6.5
 2029.8337   NOV    81.5      74.8      69.3      17.5      12.0       6.5
 2029.9170   DEC    79.5      74.1      69.1      17.2      11.7       6.3
 2030.0003   JAN    78.5      73.4      68.7      16.1      11.2       6.3
 2030.0837   FEB    77.7      72.7      68.4      14.5      10.6       6.4
 2030.1670   MAR    77.3      72.2      68.1      13.2      10.1       6.2
 2030.2503   APR    77.1      71.9      68.0      13.3       9.7       6.0
 2030.3337   MAY    76.9      71.6      67.9      12.9       9.2       5.8
 2030.4170   JUN    76.7      71.3      67.8      12.6       9.0       5.7
 2030.5003   JUL    75.9      71.0      67.8      12.4       8.8       5.7
 2030.5837   AUG    74.9      70.7      67.7      12.1       8.7       5.3
 2030.6670   SEP    73.8      70.4      67.7      11.4       8.5       4.8
 2030.7503   OCT    73.5      70.2      67.4      11.0       8.3       4.4
 2030.8337   NOV    73.0      70.0      67.3      10.8       8.1       4.1
 2030.9170   DEC    73.1      70.0      67.3      10.8       8.1       4.1
 2031.0003   JAN    73.2      70.1      67.2      11.0       8.2       4.0
 2031.0837   FEB    73.9      70.4      67.3      11.4       8.4       4.0
 2031.1670   MAR    74.8      70.8      67.4      11.5       8.6       3.9
 2031.2503   APR    75.5      71.1      67.4      11.7       8.7       3.7
 2031.3337   MAY    76.6      71.5      67.6      11.9       8.8       3.5
 2031.4170   JUN    78.3      72.1      67.7      12.0       8.9       3.5
 2031.5003   JUL    79.7      72.7      67.8      12.1       9.0       3.4
 2031.5837   AUG    81.1      73.5      67.9      12.5       9.3       3.4
 2031.6670   SEP    83.3      74.3      68.0      12.8       9.6       3.4
 2031.7503   OCT    86.2      75.3      68.1      13.3      10.0       3.8
 2031.8337   NOV    90.9      76.4      68.4      13.8      10.3       4.2
 2031.9170   DEC    95.1      77.8      68.5      14.6      10.6       4.5
 2032.0003   JAN    98.5      79.4      68.5      15.7      10.9       4.7
 2032.0837   FEB   103.6      81.1      68.5      16.1      11.1       4.8
 2032.1670   MAR   109.2      83.1      68.5      16.3      11.3       5.0
 2032.2503   APR   115.2      85.2      68.4      16.9      11.4       5.1
 2032.3337   MAY   122.0      87.5      68.6      18.0      11.6       5.3
 2032.4170   JUN   130.1      89.9      68.7      18.9      11.9       5.4
 2032.5003   JUL   136.6      92.5      69.0      19.1      12.1       5.6
 2032.5837   AUG   141.4      95.3      69.3      19.2      12.3       5.8
 2032.6670   SEP   145.9      98.1      69.4      19.0      12.6       6.0
 2032.7503   OCT   150.4     100.9      69.6      18.6      12.7       6.1
 2032.8337   NOV   155.4     103.7      70.1      18.5      12.7       6.1
 2032.9170   DEC   160.9     106.7      70.8      18.9      12.8       6.1
 2033.0003   JAN   166.3     109.8      71.0      18.8      12.9       6.3
 2033.0837   FEB   171.1     113.0      71.4      17.8      13.0       6.5
 2033.1670   MAR   177.2     116.2      71.7      17.9      13.2       6.7
 2033.2503   APR   184.3     119.3      72.3      18.4      13.4       7.1
 2033.3337   MAY   189.1     122.6      73.1      19.1      13.7       7.0
 2033.4170   JUN   192.1     125.6      73.5      19.6      14.2       7.0
 2033.5003   JUL   195.2     128.1      74.3      20.3      14.5       7.1
 2033.5837   AUG   198.1     130.2      74.9      20.3      14.5       7.2
 2033.6670   SEP   203.0     132.5      75.3      20.3      14.6       7.7
 2033.7503   OCT   208.8     135.1      75.8      20.5      14.7       8.1
 2033.8337   NOV   213.0     137.6      76.2      20.8      14.8       8.0
 2033.9170   DEC   215.9     139.9      76.5      21.2      14.8       8.0
 2034.0003   JAN   219.7     141.9      76.5      21.3      14.6       8.4
 2034.0837   FEB   223.3     143.7      76.5      21.4      14.6       8.6
 2034.1670   MAR   224.8     145.3      76.8      21.6      14.6       8.4
 2034.2503   APR   225.6     146.8      77.3      22.0      14.5       8.4
 2034.3337   MAY   228.0     147.9      77.8      22.7      14.4       8.6
 2034.4170   JUN   230.3     148.7      78.5      22.4      14.1       8.6
 2034.5003   JUL   233.0     149.3      79.8      21.3      13.8       8.5
 2034.5837   AUG   235.9     149.6      80.6      20.6      13.7       8.3
 2034.6670   SEP   237.0     149.9      81.6      20.1      13.6       8.0
 2034.7503   OCT   234.9     150.2      83.1      19.7      13.5       7.6
 2034.8337   NOV   232.6     150.3      84.6      19.6      13.5       7.5
 2034.9170   DEC   233.6     150.3      86.2      19.3      13.5       7.8
 2035.0003   JAN   234.0     149.6      87.0      19.1      13.7       7.7
 2035.0837   FEB   231.8     148.5      88.2      18.9      13.9       7.6
 2035.1670   MAR   228.8     147.7      89.8      18.9      14.0       7.5
 2035.2503   APR   225.5     147.5      90.9      19.5      13.9       7.2
 2035.3337   MAY   224.0     147.8      93.0      20.4      14.0       7.1
 2035.4170   JUN   225.0     148.2      94.3      22.0      14.4       7.1
 2035.5003   JUL   224.9     148.2      95.7      23.4      14.7       7.1
 2035.5837   AUG   223.7     148.0      96.0      24.0      14.9       7.3
 2035.6670   SEP   222.8     147.6      95.6      25.1      15.1       7.3
 2035.7503   OCT   222.5     147.2      95.5      25.7      15.3       7.0
 2035.8337   NOV   222.1     147.0      97.0      24.9      15.3       7.1
 2035.9170   DEC   221.5     146.6      97.8      24.8      15.3       6.7
 2036.0003   JAN   220.9     145.8      97.3      24.0      15.3       6.3
 2036.0837   FEB   218.8     144.6      96.5      22.2      15.3       6.1
 2036.1670   MAR   215.7     143.1      96.4      22.5      15.5       6.3
 2036.2503   APR   213.2     141.4      96.9      23.2      15.7       6.5
 2036.3337   MAY   210.6     140.0      96.4      23.2      15.7       6.7
 2036.4170   JUN   206.4     138.7      95.7      22.7      15.7       7.1
 2036.5003   JUL   203.6     137.2      96.3      22.0      15.6       7.6
 2036.5837   AUG   202.2     135.5      97.2      21.9      15.7       7.7
 2036.6670   SEP   198.5     133.5      96.3      22.7      15.9       8.1
 2036.7503   OCT   194.7     131.8      94.6      23.6      16.2       8.7
 2036.8337   NOV   192.8     130.4      93.8      23.8      16.4       8.9
 2036.9170   DEC   191.1     129.2      93.6      23.8      16.6       9.3
 2037.0003   JAN   187.6     127.5      91.8      23.8      16.6       9.7
 2037.0837   FEB   183.5     125.7      88.5      23.4      16.6      10.1
 2037.1670   MAR   179.5     124.4      88.0      22.5      16.5      10.5
 2037.2503   APR   175.8     123.3      88.7      22.7      16.4      10.7
 2037.3337   MAY   173.5     121.9      87.3      22.9      16.5      11.5
 2037.4170   JUN   171.4     120.3      86.3      23.0      16.6      11.7
 2037.5003   JUL   167.1     118.5      85.7      22.4      16.7      11.9
 2037.5837   AUG   160.7     116.7      84.9      21.5      16.5      11.9
 2037.6670   SEP   155.0     115.0      83.7      21.2      16.3      11.7
 2037.7503   OCT   151.3     113.1      82.7      21.7      16.1      11.4
 2037.8337   NOV   148.8     111.2      82.3      21.7      16.1      11.5
 2037.9170   DEC   146.2     109.6      82.2      22.1      16.1      11.4
 2038.0003   JAN   143.2     108.0      82.0      22.5      16.2      11.2
 2038.0837   FEB   139.6     106.4      81.0      22.3      16.2      11.0
 2038.1670   MAR   135.9     104.8      80.6      22.3      16.0      10.8
 2038.2503   APR   132.4     103.4      80.6      22.7      15.8      10.7
 2038.3337   MAY   128.4     101.8      80.0      22.9      15.5      10.6
 2038.4170   JUN   123.3     100.2      79.1      23.4      15.3      10.3
 2038.5003   JUL   119.4      98.7      77.7      24.0      15.0      10.1
 2038.5837   AUG   118.5      97.5      75.6      24.7      14.9      10.1
 2038.6670   SEP   118.7      96.3      74.6      25.3      14.8      10.1
 2038.7503   OCT   119.2      95.2      74.1      25.4      14.8      10.5
 2038.8337   NOV   119.5      94.3      73.8      25.3      14.7      10.4
 2038.9170   DEC   118.8      93.3      73.5      24.8      14.5      10.2
 2039.0003   JAN   117.3      92.1      73.1      23.9      14.3      10.0
 2039.0837   FEB   115.7      91.0      72.7      23.0      14.1       9.4
 2039.1670   MAR   113.5      90.0      72.0      22.5      14.2       8.8
 2039.2503   APR   110.0      89.0      71.4      22.1      14.2       8.1
 2039.3337   MAY   105.8      87.8      71.1      21.8      14.3       7.5
 2039.4170   JUN   103.2      86.8      70.8      21.4      14.5       7.4
 2039.5003   JUL   101.6      85.9      70.6      20.8      14.4       7.7
 2039.5837   AUG   100.1      85.1      70.6      20.0      14.3       8.1
 2039.6670   SEP    98.1      84.1      70.4      20.0      14.1       8.5
 2039.7503   OCT    96.5      83.0      69.9      20.2      13.9       8.5
 2039.8337   NOV    94.6      82.0      69.6      19.8      13.7       8.5
 2039.9170   DEC    93.5      81.3      69.5      19.4      13.6       8.4
 2040.0003   JAN    93.1      80.6      69.5      18.9      13.6       8.4
 2040.0837   FEB    92.3      80.0      69.3      18.2      13.6       8.1
 2040.1670   MAR    91.2      79.2      69.2      17.3      13.5       7.7
 2040.2503   APR    90.3      78.5      68.8      17.3      13.3       7.1
 2040.3337   MAY    89.5      77.8      68.6      17.4      13.2       6.8
 2040.4170   JUN    88.4      77.2      68.4      17.5      13.1       6.6
 2040.5003   JUL    87.4      76.6      68.4      17.5      12.9       6.5
 2040.5837   AUG    86.6      76.1      68.5      17.7      12.9       6.6
 2040.6670   SEP    85.2      75.6      68.5      18.0      12.7       6.5
 2040.7503   OCT    83.9      75.1      68.5      17.9      12.6       6.4
 2040.8337   NOV    82.0      74.6      68.4      17.6      12.3       6.4
 2040.9170   DEC    79.9      73.9      68.3      17.3      12.0       6.2
 2041.0003   JAN    78.4      73.2      68.0      16.3      11.7       6.1
 2041.0837   FEB    77.5      72.6      67.8      14.9      11.2       6.0
 2041.1670   MAR    77.0      72.1      67.7      13.8      10.9       6.1
 2041.2503   APR    76.9      71.8      67.6      13.9      10.5       6.2
 2041.3337   MAY    76.6      71.5      67.5      13.6      10.2       6.2
 2041.4170   JUN    76.5      71.1      67.3      13.2       9.8       6.0
 2041.5003   JUL    76.1      70.8      67.1      12.9       9.5       5.9
 2041.5837   AUG    75.1      70.5      67.1      12.6       9.3       5.8
 2041.6670   SEP    74.2      70.2      67.0      11.9       9.1       5.7
 2041.7503   OCT    74.0      70.0      67.0      11.4       8.9       5.2
