  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% 

 2020.4170   JUN    73.1      72.2      71.5       5.6       5.1       4.7
 2020.5003   JUL    74.4      72.9      71.5       6.0       5.1       4.4
 2020.5837   AUG    75.8      73.7      71.4       6.4       5.0       4.2
 2020.6670   SEP    77.5      74.6      71.5       6.6       5.0       4.1
 2020.7503   OCT    79.6      75.6      71.8       6.7       5.2       4.1
 2020.8337   NOV    83.5      76.8      72.2       6.9       5.4       4.3
 2020.9170   DEC    86.8      78.3      72.8       7.1       5.5       4.1
 2021.0003   JAN    89.3      79.8      72.9       7.1       5.4       3.7
 2021.0837   FEB    93.1      81.7      73.0       7.6       5.4       3.3
 2021.1670   MAR    97.7      83.7      73.5       8.2       5.4       3.3
 2021.2503   APR   102.2      85.9      73.8       8.8       5.4       2.9
 2021.3337   MAY   107.4      88.3      74.2       9.9       5.6       2.7
 2021.4170   JUN   113.8      90.8      75.0      10.7       5.8       2.7
 2021.5003   JUL   118.8      93.5      75.6      10.9       6.0       2.6
 2021.5837   AUG   122.4      96.3      76.5      10.8       6.1       2.6
 2021.6670   SEP   125.5      99.2      77.4      10.3       6.1       2.6
 2021.7503   OCT   129.8     102.0      78.2       9.7       6.0       2.8
 2021.8337   NOV   135.5     104.9      79.7       9.1       5.9       2.9
 2021.9170   DEC   142.1     108.0      80.9       8.6       6.0       3.0
 2022.0003   JAN   148.2     111.3      81.3       8.6       6.2       3.4
 2022.0837   FEB   154.3     114.6      81.9       9.6       6.6       4.1
 2022.1670   MAR   162.4     117.8      82.7      10.0       7.0       4.7
 2022.2503   APR   170.3     121.0      84.0      10.0       7.4       4.9
 2022.3337   MAY   175.5     124.3      85.8      10.1       7.7       5.2
 2022.4170   JUN   178.6     127.4      87.8      10.7       7.9       4.7
 2022.5003   JUL   181.2     129.9      89.2      11.4       8.0       4.3
 2022.5837   AUG   183.5     132.1      89.5      11.5       8.2       4.2
 2022.6670   SEP   187.6     134.4      89.7      12.1       8.6       4.4
 2022.7503   OCT   193.8     137.0      91.4      13.0       9.1       4.7
 2022.8337   NOV   198.9     139.6      92.4      13.7       9.2       4.3
 2022.9170   DEC   202.4     141.9      92.8      14.0       9.3       4.0
 2023.0003   JAN   207.0     143.8      94.0      14.1       9.7       3.8
 2023.0837   FEB   211.6     145.7      96.2      14.1      10.0       3.6
 2023.1670   MAR   214.5     147.2      99.1      14.4      10.0       3.5
 2023.2503   APR   216.8     148.7     102.3      14.8      10.0       3.5
 2023.3337   MAY   218.9     149.9     103.6      15.7       9.9       3.4
 2023.4170   JUN   220.7     150.6     103.5      15.9       9.9       3.4
 2023.5003   JUL   223.7     151.2     102.2      15.4      10.1       3.9
 2023.5837   AUG   226.8     151.5     102.0      15.2      10.3       4.4
 2023.6670   SEP   227.9     151.7     102.7      14.7      10.2       4.7
 2023.7503   OCT   226.8     152.0     103.7      14.1      10.0       4.6
 2023.8337   NOV   226.0     152.1     105.2      14.0      10.0       4.8
 2023.9170   DEC   226.9     152.0     106.9      13.8      10.1       5.0
 2024.0003   JAN   226.8     151.3     107.8      13.0       9.8       4.7
 2024.0837   FEB   223.9     150.1     108.5      12.5       9.7       4.9
 2024.1670   MAR   219.8     149.3     109.0      12.2       9.2       5.1
 2024.2503   APR   216.1     149.1     109.8      12.0       8.7       4.9
 2024.3337   MAY   214.1     149.4     110.7      12.3       8.6       4.7
 2024.4170   JUN   214.5     149.8     111.4      13.3       8.5       4.4
 2024.5003   JUL   214.3     149.7     110.1      14.3       8.5       4.3
 2024.5837   AUG   212.4     149.5     107.0      14.7       8.6       4.6
 2024.6670   SEP   210.5     149.1     103.8      15.4       8.6       4.6
 2024.7503   OCT   210.0     148.7     100.4      15.5       8.5       4.4
 2024.8337   NOV   210.2     148.5      99.1      15.0       8.7       4.6
 2024.9170   DEC   209.8     148.1      97.9      14.9       8.7       4.6
 2025.0003   JAN   208.7     147.3      96.3      13.9       8.6       5.4
 2025.0837   FEB   205.9     146.1      94.4      12.4       8.6       5.5
 2025.1670   MAR   203.2     144.5      92.5      12.4       8.8       5.8
 2025.2503   APR   200.4     142.9      91.5      12.9       9.2       5.9
 2025.3337   MAY   197.4     141.4      90.6      13.2       9.4       6.1
 2025.4170   JUN   193.7     140.2      89.9      14.1       9.8       6.4
 2025.5003   JUL   190.9     138.7      89.6      14.8      10.1       6.6
 2025.5837   AUG   187.6     136.9      89.4      15.5       9.9       6.4
 2025.6670   SEP   183.5     134.8      89.7      15.9      10.0       6.3
 2025.7503   OCT   180.6     133.0      90.2      16.4      10.3       6.4
 2025.8337   NOV   177.9     131.6      90.3      16.3      10.3       6.2
 2025.9170   DEC   176.0     130.3      90.9      15.7      10.4       6.0
 2026.0003   JAN   173.3     128.5      91.6      14.7      10.4       5.9
 2026.0837   FEB   169.7     126.6      91.4      13.8      10.5       5.9
 2026.1670   MAR   166.3     125.4      91.2      13.3      11.0       6.4
 2026.2503   APR   163.4     124.2      90.9      14.0      11.4       7.0
 2026.3337   MAY   161.2     122.8      90.5      14.7      11.7       7.9
 2026.4170   JUN   159.5     121.2      89.9      15.0      11.9       7.8
 2026.5003   JUL   155.9     119.3      89.6      14.7      12.2       8.2
 2026.5837   AUG   150.7     117.4      89.3      15.7      12.4       8.7
 2026.6670   SEP   145.4     115.7      88.2      17.0      12.5       9.0
 2026.7503   OCT   141.8     113.8      86.9      17.8      12.5       9.6
 2026.8337   NOV   139.5     111.9      85.9      18.3      12.8       9.6
 2026.9170   DEC   137.7     110.2      84.7      18.1      13.1       9.3
 2027.0003   JAN   134.9     108.7      84.0      18.6      13.2       9.0
 2027.0837   FEB   131.5     107.1      83.3      18.4      13.2       8.5
 2027.1670   MAR   128.3     105.5      83.1      18.5      13.1       8.3
 2027.2503   APR   126.0     104.0      82.4      19.0      13.1       8.3
 2027.3337   MAY   125.0     102.4      81.5      19.3      12.8       8.0
 2027.4170   JUN   124.2     100.7      80.4      19.7      12.5       7.0
 2027.5003   JUL   123.9      99.1      79.5      20.2      12.1       6.0
 2027.5837   AUG   123.3      97.9      78.4      20.7      11.8       5.9
 2027.6670   SEP   122.9      96.7      77.5      21.1      11.6       5.8
 2027.7503   OCT   121.8      95.6      76.9      21.4      11.7       5.8
 2027.8337   NOV   119.7      94.7      76.7      21.1      11.4       5.7
 2027.9170   DEC   117.4      93.6      76.1      20.3      11.1       5.7
 2028.0003   JAN   116.1      92.4      75.2      19.4      10.9       5.9
 2028.0837   FEB   115.2      91.3      74.4      18.7      10.9       6.1
 2028.1670   MAR   113.9      90.3      73.5      18.5      11.1       5.8
 2028.2503   APR   111.4      89.2      73.0      18.2      11.2       5.1
 2028.3337   MAY   107.8      88.0      72.8      18.0      11.4       4.6
 2028.4170   JUN   104.9      87.0      72.6      17.8      11.7       4.6
 2028.5003   JUL   102.9      86.1      72.3      17.6      11.9       5.1
 2028.5837   AUG   101.7      85.2      72.1      18.0      11.8       5.7
 2028.6670   SEP    99.8      84.2      71.9      18.2      11.7       6.0
 2028.7503   OCT    98.1      83.2      71.6      18.3      11.4       6.0
 2028.8337   NOV    96.1      82.2      71.4      18.1      11.5       6.1
 2028.9170   DEC    95.1      81.5      71.4      17.9      11.7       6.4
 2029.0003   JAN    94.7      80.8      71.3      17.7      12.0       6.7
 2029.0837   FEB    93.5      80.1      71.4      17.1      12.2       7.0
 2029.1670   MAR    91.4      79.4      71.3      16.2      12.1       7.0
 2029.2503   APR    89.6      78.7      71.0      16.3      11.8       6.7
 2029.3337   MAY    88.1      78.0      70.9      16.3      11.5       6.5
 2029.4170   JUN    86.8      77.3      70.7      16.2      11.2       6.1
 2029.5003   JUL    86.0      76.7      70.5      16.3      11.2       5.6
 2029.5837   AUG    85.4      76.2      70.3      16.7      11.4       5.5
 2029.6670   SEP    84.0      75.7      70.0      17.2      11.4       5.9
 2029.7503   OCT    82.6      75.2      69.3      17.1      11.3       6.3
 2029.8337   NOV    80.7      74.7      69.2      16.9      11.2       6.4
 2029.9170   DEC    79.5      74.0      68.9      16.6      10.9       6.4
 2030.0003   JAN    78.6      73.3      68.6      15.5      10.4       6.3
 2030.0837   FEB    77.9      72.7      68.4      13.9       9.9       6.1
 2030.1670   MAR    77.3      72.2      68.2      12.7       9.4       5.8
 2030.2503   APR    77.1      71.9      68.2      12.8       9.1       5.7
 2030.3337   MAY    76.8      71.5      68.0      12.5       8.7       5.6
 2030.4170   JUN    76.5      71.2      67.8      12.1       8.5       5.5
 2030.5003   JUL    75.8      70.9      67.9      12.0       8.4       5.4
 2030.5837   AUG    74.7      70.6      67.7      11.7       8.2       5.0
 2030.6670   SEP    73.6      70.3      67.4      11.0       7.9       4.5
 2030.7503   OCT    72.8      70.1      67.1      10.5       7.7       4.0
 2030.8337   NOV    72.3      69.9      67.1      10.2       7.5       3.7
 2030.9170   DEC    72.4      69.9      67.1      10.3       7.6       3.8
 2031.0003   JAN    72.6      70.0      67.1      10.6       7.7       3.6
 2031.0837   FEB    73.4      70.3      67.1      11.0       8.0       3.7
 2031.1670   MAR    74.3      70.7      67.3      11.2       8.2       3.7
 2031.2503   APR    75.1      71.1      67.3      11.4       8.3       3.5
 2031.3337   MAY    76.3      71.5      67.5      11.6       8.5       3.3
 2031.4170   JUN    78.0      72.0      67.6      11.8       8.7       3.3
 2031.5003   JUL    79.5      72.7      67.7      12.0       8.8       3.3
 2031.5837   AUG    80.9      73.4      67.9      12.4       9.1       3.3
 2031.6670   SEP    83.2      74.3      68.0      12.7       9.5       3.3
 2031.7503   OCT    86.2      75.2      68.1      13.2       9.9       3.7
 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
