  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% 

 2020.0003   JAN    69.6      69.4      69.2       5.6       5.4       5.1
 2020.0837   FEB    70.0      69.7      69.1       5.8       5.5       4.9
 2020.1670   MAR    70.9      70.0      69.1       5.8       5.5       4.9
 2020.2503   APR    72.0      70.4      69.3       5.9       5.4       4.8
 2020.3337   MAY    73.0      70.7      69.3       6.0       5.5       4.8
 2020.4170   JUN    74.7      71.2      69.3       6.1       5.5       4.6
 2020.5003   JUL    75.9      71.9      69.1       6.4       5.5       4.4
 2020.5837   AUG    77.2      72.5      69.2       7.0       5.4       4.2
 2020.6670   SEP    79.2      73.3      69.3       7.1       5.4       4.0
 2020.7503   OCT    81.8      74.2      69.2       7.2       5.6       4.0
 2020.8337   NOV    85.9      75.2      69.2       7.4       5.8       4.0
 2020.9170   DEC    89.8      76.5      69.1       7.5       5.9       4.3
 2021.0003   JAN    92.8      77.8      68.8       7.4       5.8       4.0
 2021.0837   FEB    97.3      79.4      68.6       7.3       5.7       3.6
 2021.1670   MAR   102.5      81.1      68.4       7.3       5.6       3.5
 2021.2503   APR   107.8      82.9      67.8       7.8       5.6       3.1
 2021.3337   MAY   114.1      85.0      67.2       8.8       5.7       2.8
 2021.4170   JUN   121.5      87.1      66.9       9.6       5.9       2.8
 2021.5003   JUL   127.2      89.4      67.2       9.8       6.1       2.8
 2021.5837   AUG   131.3      91.9      67.9       9.7       6.2       2.8
 2021.6670   SEP   135.0      94.4      68.3       9.2       6.2       2.8
 2021.7503   OCT   138.9      97.0      68.3       8.6       6.2       3.0
 2021.8337   NOV   143.2      99.6      69.0       8.0       6.1       3.2
 2021.9170   DEC   148.5     102.3      70.1       8.2       6.2       3.3
 2022.0003   JAN   155.0     105.2      70.5       9.1       6.4       3.7
 2022.0837   FEB   161.5     108.0      71.2      10.3       6.8       4.4
 2022.1670   MAR   169.1     110.8      72.3      10.7       7.3       5.0
 2022.2503   APR   175.9     113.7      73.6      10.6       7.7       5.2
 2022.3337   MAY   180.4     116.7      75.2      10.8       8.0       5.5
 2022.4170   JUN   182.6     119.6      76.5      11.4       8.2       5.2
 2022.5003   JUL   184.1     122.0      78.2      12.0       8.4       4.8
 2022.5837   AUG   186.6     124.0      79.5      12.2       8.5       4.7
 2022.6670   SEP   191.3     126.1      80.2      12.7       8.9       4.8
 2022.7503   OCT   197.4     128.5      81.0      13.6       9.3       5.0
 2022.8337   NOV   202.1     130.8      80.4      14.3       9.5       4.7
 2022.9170   DEC   205.2     132.9      80.5      14.6       9.5       4.3
 2023.0003   JAN   209.2     134.8      81.0      14.5       9.8       4.0
 2023.0837   FEB   213.4     136.5      81.2      14.1      10.1       3.8
 2023.1670   MAR   215.5     138.0      82.2      13.8      10.1       3.7
 2023.2503   APR   216.9     139.4      84.5      14.2      10.1       3.7
 2023.3337   MAY   219.0     140.5      85.7      15.0      10.0       3.5
 2023.4170   JUN   220.5     141.3      85.1      15.2       9.9       3.4
 2023.5003   JUL   222.4     142.0      84.0      14.9      10.1       3.9
 2023.5837   AUG   224.9     142.3      83.7      14.7      10.4       4.5
 2023.6670   SEP   226.1     142.6      84.3      14.3      10.3       4.9
 2023.7503   OCT   225.9     142.9      85.4      13.7      10.1       4.9
 2023.8337   NOV   225.3     143.2      87.3      13.6      10.1       5.0
 2023.9170   DEC   226.1     143.3      89.4      13.7      10.2       5.1
 2024.0003   JAN   225.9     142.8      90.7      13.3      10.0       5.0
 2024.0837   FEB   222.9     141.8      91.6      13.1       9.9       5.3
 2024.1670   MAR   219.4     141.1      92.5      12.8       9.5       5.5
 2024.2503   APR   215.8     140.9      93.3      12.7       9.1       5.4
 2024.3337   MAY   214.5     141.2      94.3      13.0       9.0       5.3
 2024.4170   JUN   214.7     141.6      95.6      14.1       9.0       5.1
 2024.5003   JUL   214.2     141.7      97.0      15.1       9.0       5.1
 2024.5837   AUG   212.6     141.6      98.0      15.6       9.2       5.4
 2024.6670   SEP   210.5     141.3      98.4      16.4       9.2       5.5
 2024.7503   OCT   209.0     140.9      98.8      16.6       9.1       5.4
 2024.8337   NOV   208.3     140.8      98.2      16.1       9.3       5.6
 2024.9170   DEC   208.1     140.5      97.2      16.0       9.4       5.6
 2025.0003   JAN   207.3     139.8      97.1      15.2       9.3       5.8
 2025.0837   FEB   205.5     138.7      97.5      13.6       9.3       5.6
 2025.1670   MAR   202.6     137.3      97.4      13.6       9.6       5.5
 2025.2503   APR   200.3     135.7      97.1      14.0       9.9       5.6
 2025.3337   MAY   197.4     134.1      95.9      14.3      10.1       5.8
 2025.4170   JUN   193.2     132.9      95.3      15.1      10.4       6.5
 2025.5003   JUL   189.4     131.5      95.4      15.6      10.7       6.9
 2025.5837   AUG   185.4     129.9      95.0      16.2      10.5       6.6
 2025.6670   SEP   181.3     128.1      95.1      16.5      10.5       6.8
 2025.7503   OCT   178.5     126.8      95.5      16.9      10.7       7.1
 2025.8337   NOV   175.8     125.7      95.1      16.8      10.7       7.0
 2025.9170   DEC   173.3     124.7      95.1      16.2      10.7       6.8
 2026.0003   JAN   170.0     123.2      95.4      15.2      10.7       6.7
 2026.0837   FEB   166.3     121.5      94.1      13.9      10.8       6.5
 2026.1670   MAR   163.7     120.4      93.4      13.4      11.3       7.0
 2026.2503   APR   161.4     119.4      91.9      14.3      11.6       7.5
 2026.3337   MAY   159.3     118.2      89.9      15.0      11.9       8.4
 2026.4170   JUN   155.9     116.7      89.3      15.2      12.1       8.1
 2026.5003   JUL   151.2     115.1      89.1      14.9      12.3       8.4
 2026.5837   AUG   146.6     113.5      88.3      15.8      12.4       8.9
 2026.6670   SEP   142.4     112.1      87.2      17.1      12.5       9.2
 2026.7503   OCT   138.3     110.2      85.9      17.9      12.6       9.8
 2026.8337   NOV   134.7     108.2      84.9      18.4      12.9       9.2
 2026.9170   DEC   132.2     106.5      84.6      18.2      13.2       9.0
 2027.0003   JAN   129.5     105.0      84.5      18.3      13.4       8.8
 2027.0837   FEB   126.5     103.4      84.0      18.2      13.5       8.4
 2027.1670   MAR   125.6     101.9      84.0      18.3      13.4       8.2
 2027.2503   APR   125.7     100.7      83.7      18.8      13.3       8.2
 2027.3337   MAY   125.7      99.2      82.3      19.1      13.0       7.8
 2027.4170   JUN   125.4      97.8      80.6      19.5      12.7       6.8
 2027.5003   JUL   125.0      96.5      79.6      19.9      12.3       5.8
 2027.5837   AUG   123.8      95.3      78.5      20.2      11.9       5.5
 2027.6670   SEP   123.0      94.2      77.5      20.5      11.7       5.4
 2027.7503   OCT   121.9      93.2      77.0      20.8      11.7       5.4
 2027.8337   NOV   119.9      92.3      76.8      20.4      11.4       5.2
 2027.9170   DEC   117.7      91.4      76.2      19.7      11.1       5.2
 2028.0003   JAN   116.0      90.3      75.3      18.8      10.9       5.3
 2028.0837   FEB   115.4      89.4      74.4      18.1      10.9       5.7
 2028.1670   MAR   114.4      88.6      73.5      18.0      11.2       5.9
 2028.2503   APR   111.9      87.7      73.1      17.7      11.3       5.2
 2028.3337   MAY   108.4      86.6      72.9      17.6      11.6       4.8
 2028.4170   JUN   106.2      85.7      72.6      17.5      11.9       4.8
 2028.5003   JUL   104.1      84.9      72.3      17.9      12.1       5.4
 2028.5837   AUG   102.5      84.1      72.2      18.3      12.0       5.9
 2028.6670   SEP   101.0      83.2      72.0      18.6      11.9       6.3
 2028.7503   OCT    99.0      82.2      71.7      18.7      11.8       6.3
 2028.8337   NOV    96.7      81.2      71.4      18.5      11.8       6.6
 2028.9170   DEC    95.6      80.6      71.3      18.3      12.1       6.8
 2029.0003   JAN    95.1      80.0      71.1      18.1      12.4       7.2
 2029.0837   FEB    93.7      79.3      71.0      17.5      12.6       7.4
 2029.1670   MAR    91.6      78.6      70.7      16.6      12.6       7.4
 2029.2503   APR    89.8      77.8      70.3      16.7      12.3       7.2
 2029.3337   MAY    88.3      77.2      70.0      16.8      12.0       7.0
 2029.4170   JUN    86.8      76.5      69.8      16.8      11.7       6.6
 2029.5003   JUL    85.7      76.0      69.8      16.9      11.7       6.1
 2029.5837   AUG    85.0      75.5      69.8      17.2      11.9       6.1
 2029.6670   SEP    83.7      75.1      69.6      17.6      11.9       6.4
 2029.7503   OCT    82.0      74.6      69.4      17.5      11.8       6.5
 2029.8337   NOV    80.0      74.1      69.3      17.3      11.7       6.5
 2029.9170   DEC    79.1      73.4      69.1      17.0      11.4       6.3
 2030.0003   JAN    78.0      72.8      68.8      15.9      10.9       6.3
 2030.0837   FEB    77.1      72.2      68.4      14.3      10.3       6.2
 2030.1670   MAR    76.4      71.8      68.1      13.0       9.8       6.2
 2030.2503   APR    76.2      71.5      68.1      13.1       9.4       6.1
 2030.3337   MAY    75.9      71.1      68.0      12.8       9.0       6.0
 2030.4170   JUN    75.5      70.8      67.8      12.4       8.8       5.8
 2030.5003   JUL    74.8      70.5      67.4      12.2       8.6       5.7
 2030.5837   AUG    73.9      70.2      67.2      11.9       8.4       5.3
 2030.6670   SEP    72.8      69.9      67.0      11.2       8.1       4.7
 2030.7503   OCT    72.5      69.8      66.8      10.7       7.9       4.2
 2030.8337   NOV    72.3      69.6      66.9      10.5       7.7       3.9
 2030.9170   DEC    72.4      69.6      66.9      10.5       7.7       3.9
 2031.0003   JAN    72.6      69.7      66.9      10.8       7.9       3.8
 2031.0837   FEB    73.3      70.1      67.0      11.1       8.1       3.9
 2031.1670   MAR    74.3      70.5      67.1      11.3       8.3       3.8
 2031.2503   APR    75.1      70.9      67.2      11.6       8.4       3.6
 2031.3337   MAY    76.3      71.3      67.4      11.7       8.6       3.4
 2031.4170   JUN    78.0      71.9      67.5      11.9       8.7       3.4
 2031.5003   JUL    79.5      72.6      67.7      12.0       8.9       3.4
 2031.5837   AUG    80.9      73.3      67.8      12.4       9.2       3.3
 2031.6670   SEP    83.2      74.2      68.0      12.8       9.5       3.4
 2031.7503   OCT    86.2      75.2      68.1      13.2       9.9       3.7
 2031.8337   NOV    90.8      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
