  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% 

 2020.2503   APR    71.3      70.4      69.8       5.4       5.2       5.0
 2020.3337   MAY    72.1      70.8      69.6       5.9       5.3       4.8
 2020.4170   JUN    73.6      71.3      69.9       6.4       5.3       4.5
 2020.5003   JUL    74.9      71.9      69.9       6.9       5.3       4.2
 2020.5837   AUG    76.1      72.6      70.1       7.4       5.3       4.0
 2020.6670   SEP    78.0      73.4      69.9       7.6       5.3       3.9
 2020.7503   OCT    80.4      74.2      69.6       7.8       5.5       3.9
 2020.8337   NOV    84.3      75.3      69.9       8.0       5.7       4.0
 2020.9170   DEC    87.9      76.5      70.5       8.1       5.8       4.3
 2021.0003   JAN    90.7      77.9      70.7       8.1       5.7       4.0
 2021.0837   FEB    94.9      79.4      70.6       8.0       5.6       3.7
 2021.1670   MAR    99.7      81.2      70.8       8.1       5.6       3.5
 2021.2503   APR   104.4      83.0      70.6       8.6       5.6       3.0
 2021.3337   MAY   110.3      85.1      70.3       9.6       5.7       2.7
 2021.4170   JUN   117.2      87.2      70.4      10.4       5.9       2.7
 2021.5003   JUL   122.5      89.5      71.0      10.6       6.0       2.6
 2021.5837   AUG   126.3      92.1      72.1      10.5       6.1       2.6
 2021.6670   SEP   129.7      94.6      72.7      10.0       6.1       2.6
 2021.7503   OCT   133.2      97.2      73.0       9.4       6.1       2.8
 2021.8337   NOV   138.8      99.8      74.0       8.8       6.0       3.0
 2021.9170   DEC   145.6     102.6      75.4       8.3       6.1       3.1
 2022.0003   JAN   152.0     105.5      75.9       8.7       6.3       3.4
 2022.0837   FEB   158.3     108.3      76.6       9.8       6.7       4.4
 2022.1670   MAR   165.7     111.2      76.8      10.2       7.2       5.0
 2022.2503   APR   172.5     114.1      78.7      10.2       7.6       5.2
 2022.3337   MAY   176.8     117.2      81.0      10.3       7.8       5.4
 2022.4170   JUN   179.3     120.1      82.7      10.9       8.1       4.9
 2022.5003   JUL   182.2     122.5      83.7      11.6       8.2       4.5
 2022.5837   AUG   185.4     124.6      83.7      11.7       8.3       4.3
 2022.6670   SEP   190.4     126.7      83.5      12.3       8.7       4.5
 2022.7503   OCT   196.5     129.1      84.3      13.2       9.2       4.8
 2022.8337   NOV   201.2     131.5      83.8      13.9       9.3       4.4
 2022.9170   DEC   204.3     133.7      84.2      14.1       9.3       4.0
 2023.0003   JAN   208.3     135.6      85.0      14.1       9.7       3.7
 2023.0837   FEB   212.5     137.4      88.3      13.8      10.0       3.6
 2023.1670   MAR   214.7     139.0      92.2      13.7      10.0       3.5
 2023.2503   APR   216.6     140.5      93.5      14.1      10.0       3.5
 2023.3337   MAY   218.9     141.6      94.6      14.9       9.9       3.2
 2023.4170   JUN   221.1     142.3      93.8      15.1       9.8       3.2
 2023.5003   JUL   224.0     143.0      92.6      14.7      10.0       3.7
 2023.5837   AUG   227.0     143.4      92.4      14.6      10.2       4.2
 2023.6670   SEP   228.0     143.6      93.0      14.1      10.2       4.6
 2023.7503   OCT   226.0     144.0      94.0      13.5      10.0       4.6
 2023.8337   NOV   224.6     144.2      95.7      13.5      10.0       4.8
 2023.9170   DEC   225.5     144.3      97.6      13.4      10.1       4.9
 2024.0003   JAN   225.4     143.8      98.7      12.9       9.8       4.6
 2024.0837   FEB   222.6     142.7      99.5      12.6       9.7       4.9
 2024.1670   MAR   218.7     142.0     100.5      12.2       9.2       5.0
 2024.2503   APR   215.2     141.9     101.7      12.1       8.7       4.9
 2024.3337   MAY   213.9     142.2     103.0      12.3       8.6       4.7
 2024.4170   JUN   214.1     142.6     104.3      13.3       8.6       4.4
 2024.5003   JUL   213.7     142.6     105.7      14.2       8.6       4.3
 2024.5837   AUG   212.1     142.5     105.9      14.7       8.7       4.6
 2024.6670   SEP   210.0     142.2     103.7      15.4       8.7       4.6
 2024.7503   OCT   208.5     141.8     100.7      15.5       8.6       4.4
 2024.8337   NOV   209.2     141.7      99.2      15.0       8.8       4.7
 2024.9170   DEC   209.7     141.5      98.0      15.0       8.9       4.7
 2025.0003   JAN   208.6     140.7      96.9      14.1       8.8       5.6
 2025.0837   FEB   205.6     139.6      95.2      12.7       8.8       5.7
 2025.1670   MAR   201.6     138.2      93.3      12.8       9.1       5.8
 2025.2503   APR   198.7     136.6      92.7      13.2       9.5       5.9
 2025.3337   MAY   195.8     135.0      91.9      13.9       9.8       6.2
 2025.4170   JUN   192.2     133.8      90.9      15.0      10.2       6.8
 2025.5003   JUL   189.3     132.4      90.5      16.0      10.5       7.3
 2025.5837   AUG   186.4     130.8      90.3      16.8      10.4       7.1
 2025.6670   SEP   182.9     129.0      90.5      17.2      10.4       6.9
 2025.7503   OCT   180.0     127.6      91.0      17.7      10.7       7.0
 2025.8337   NOV   176.6     126.6      91.0      17.6      10.7       6.9
 2025.9170   DEC   174.1     125.6      91.4      17.0      10.7       6.7
 2026.0003   JAN   170.8     124.0      92.0      16.0      10.7       6.5
 2026.0837   FEB   167.2     122.3      91.8      14.7      10.7       6.4
 2026.1670   MAR   164.6     121.2      91.5      14.1      11.2       6.9
 2026.2503   APR   162.2     120.2      90.9      14.2      11.6       7.4
 2026.3337   MAY   160.1     118.9      89.4      14.9      11.9       8.2
 2026.4170   JUN   156.7     117.4      88.6      15.0      12.0       7.8
 2026.5003   JUL   152.0     115.7      87.9      14.6      12.2       8.0
 2026.5837   AUG   147.2     114.2      87.2      15.6      12.3       8.5
 2026.6670   SEP   142.9     112.6      86.2      16.9      12.4       8.8
 2026.7503   OCT   138.7     110.7      84.9      17.8      12.5       9.8
 2026.8337   NOV   134.4     108.8      83.8      18.2      12.9       9.2
 2026.9170   DEC   130.7     107.0      83.5      18.1      13.1       9.0
 2027.0003   JAN   127.7     105.5      83.4      18.5      13.3       8.7
 2027.0837   FEB   124.8     103.9      82.9      18.5      13.4       8.3
 2027.1670   MAR   123.4     102.4      82.6      18.6      13.3       8.2
 2027.2503   APR   123.3     101.1      81.9      19.1      13.2       8.2
 2027.3337   MAY   123.4      99.7      81.5      19.4      13.1       7.9
 2027.4170   JUN   123.3      98.2      80.5      19.9      12.8       7.0
 2027.5003   JUL   123.1      96.8      79.6      20.4      12.4       6.0
 2027.5837   AUG   122.5      95.7      78.3      20.7      12.0       5.8
 2027.6670   SEP   122.2      94.6      77.4      21.0      11.8       5.6
 2027.7503   OCT   121.1      93.5      76.9      21.3      11.7       5.5
 2027.8337   NOV   119.1      92.7      76.6      20.9      11.4       5.4
 2027.9170   DEC   116.9      91.8      76.1      20.2      11.1       5.3
 2028.0003   JAN   115.2      90.7      75.2      19.2      10.9       5.4
 2028.0837   FEB   114.6      89.7      74.4      18.5      10.9       5.7
 2028.1670   MAR   113.6      88.9      73.5      18.2      11.1       6.0
 2028.2503   APR   111.2      88.0      73.1      17.9      11.2       5.5
 2028.3337   MAY   107.7      86.9      72.9      17.7      11.4       5.0
 2028.4170   JUN   105.0      85.9      72.6      17.5      11.6       5.0
 2028.5003   JUL   103.0      85.1      72.3      17.7      11.8       5.5
 2028.5837   AUG   101.5      84.3      72.2      18.1      11.8       6.1
 2028.6670   SEP   100.0      83.5      71.9      18.4      11.7       6.4
 2028.7503   OCT    98.1      82.4      71.6      18.5      11.5       6.4
 2028.8337   NOV    96.2      81.4      71.3      18.3      11.6       6.6
 2028.9170   DEC    95.1      80.7      71.1      18.1      11.7       6.8
 2029.0003   JAN    94.6      80.1      71.0      17.8      12.1       7.1
 2029.0837   FEB    93.3      79.4      71.0      17.2      12.3       7.3
 2029.1670   MAR    91.1      78.6      70.8      16.4      12.2       7.2
 2029.2503   APR    89.2      77.9      70.3      16.4      11.9       7.0
 2029.3337   MAY    87.7      77.2      70.0      16.4      11.6       6.9
 2029.4170   JUN    86.3      76.6      69.9      16.4      11.3       6.5
 2029.5003   JUL    85.4      76.1      69.9      16.4      11.2       5.9
 2029.5837   AUG    84.8      75.6      69.8      16.8      11.4       5.8
 2029.6670   SEP    83.5      75.2      69.7      17.2      11.5       6.2
 2029.7503   OCT    81.9      74.7      69.2      17.2      11.4       6.6
 2029.8337   NOV    80.1      74.2      69.1      17.0      11.3       6.6
 2029.9170   DEC    79.2      73.5      68.8      16.7      11.1       6.4
 2030.0003   JAN    78.0      72.9      68.5      15.6      10.6       6.3
 2030.0837   FEB    77.3      72.3      68.3      14.1      10.0       6.3
 2030.1670   MAR    76.8      71.9      68.1      12.9       9.6       6.2
 2030.2503   APR    76.6      71.6      68.1      13.0       9.2       6.1
 2030.3337   MAY    76.4      71.2      67.9      12.7       8.9       5.9
 2030.4170   JUN    76.1      70.9      67.8      12.3       8.6       5.8
 2030.5003   JUL    75.2      70.6      67.7      12.1       8.5       5.7
 2030.5837   AUG    74.2      70.3      67.4      11.8       8.3       5.3
 2030.6670   SEP    73.1      70.0      67.2      11.1       7.9       4.7
 2030.7503   OCT    72.5      69.8      66.9      10.5       7.7       4.2
 2030.8337   NOV    72.3      69.6      67.0      10.3       7.5       3.9
 2030.9170   DEC    72.4      69.6      67.0      10.4       7.6       3.9
 2031.0003   JAN    72.6      69.8      67.0      10.7       7.7       3.8
 2031.0837   FEB    73.3      70.1      67.1      11.0       8.0       3.9
 2031.1670   MAR    74.3      70.5      67.2      11.2       8.2       3.8
 2031.2503   APR    75.1      70.9      67.3      11.5       8.3       3.6
 2031.3337   MAY    76.3      71.3      67.4      11.7       8.5       3.4
 2031.4170   JUN    78.0      71.9      67.6      11.8       8.7       3.4
 2031.5003   JUL    79.5      72.6      67.7      12.0       8.8       3.4
 2031.5837   AUG    80.9      73.4      67.8      12.4       9.1       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    90.9      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
