  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% 

 2021.1670   MAR    80.7      79.4      77.8       7.2       6.8       6.1
 2021.2503   APR    83.5      80.9      77.8       8.0       6.7       5.5
 2021.3337   MAY    87.3      82.7      78.2       8.7       6.9       5.2
 2021.4170   JUN    91.6      84.4      78.0       9.3       7.0       5.1
 2021.5003   JUL    96.2      86.5      77.5       9.6       7.2       4.9
 2021.5837   AUG   101.0      88.9      77.6       9.6       7.4       5.0
 2021.6670   SEP   105.2      91.3      78.7       9.6       7.6       5.3
 2021.7503   OCT   109.3      93.7      80.2       9.6       7.6       5.5
 2021.8337   NOV   114.9      96.2      81.4       9.6       7.6       5.5
 2021.9170   DEC   121.6      98.9      82.1      10.0       7.8       5.7
 2022.0003   JAN   127.5     101.6      82.5      10.9       8.0       6.1
 2022.0837   FEB   133.9     104.4      83.2      12.0       8.3       6.3
 2022.1670   MAR   141.2     107.1      84.1      12.4       8.8       6.5
 2022.2503   APR   148.9     110.0      85.7      12.4       9.2       6.8
 2022.3337   MAY   154.1     112.9      87.3      12.8       9.6       6.7
 2022.4170   JUN   157.5     115.8      89.2      13.3       9.9       6.4
 2022.5003   JUL   161.3     118.3      90.2      14.1      10.1       6.0
 2022.5837   AUG   164.5     120.3      90.6      14.1      10.2       5.8
 2022.6670   SEP   169.1     122.3      90.3      14.6      10.4       5.8
 2022.7503   OCT   175.4     124.7      90.8      15.3      10.7       5.9
 2022.8337   NOV   182.6     127.1      91.1      16.0      10.9       5.7
 2022.9170   DEC   188.6     129.5      88.9      16.4      11.1       5.5
 2023.0003   JAN   193.2     131.6      87.2      16.2      11.3       5.3
 2023.0837   FEB   196.7     133.5      87.2      15.8      11.5       4.9
 2023.1670   MAR   199.6     135.2      87.8      15.9      11.5       4.8
 2023.2503   APR   202.8     136.8      89.9      16.3      11.4       4.8
 2023.3337   MAY   205.5     138.1      90.6      17.3      11.4       4.7
 2023.4170   JUN   206.4     139.0      89.9      17.5      11.4       4.8
 2023.5003   JUL   205.4     139.9      89.6      17.1      11.5       5.3
 2023.5837   AUG   208.5     140.5      88.6      16.9      11.7       6.0
 2023.6670   SEP   210.4     141.0      88.4      16.6      11.7       6.4
 2023.7503   OCT   210.6     141.5      90.9      16.1      11.6       6.5
 2023.8337   NOV   210.7     141.9      93.0      16.0      11.6       6.7
 2023.9170   DEC   212.1     142.2      95.4      15.8      11.6       6.8
 2024.0003   JAN   212.1     141.7      94.6      15.2      11.6       6.8
 2024.0837   FEB   209.3     140.7      93.0      15.2      11.7       7.4
 2024.1670   MAR   206.2     140.1      92.1      15.0      11.4       7.7
 2024.2503   APR   203.1     140.1      90.8      15.0      11.0       7.2
 2024.3337   MAY   201.3     140.5      89.0      15.7      10.9       7.3
 2024.4170   JUN   201.0     140.9      87.3      16.9      11.0       7.1
 2024.5003   JUL   200.5     141.1      85.7      18.1      11.1       7.2
 2024.5837   AUG   199.6     141.2      83.2      18.6      11.3       7.5
 2024.6670   SEP   198.2     140.9      80.7      19.6      11.4       7.5
 2024.7503   OCT   197.3     140.6      77.9      19.8      11.4       7.5
 2024.8337   NOV   197.3     140.5      76.6      19.2      11.5       7.8
 2024.9170   DEC   198.2     140.3      76.2      19.0      11.5       7.7
 2025.0003   JAN   197.9     139.6      75.3      18.1      11.3       7.3
 2025.0837   FEB   196.7     138.6      74.9      16.1      11.3       6.9
 2025.1670   MAR   194.6     137.2      74.3      15.5      11.5       6.8
 2025.2503   APR   192.6     135.8      74.0      15.9      11.8       6.9
 2025.3337   MAY   190.4     134.5      73.1      16.2      12.0       7.2
 2025.4170   JUN   187.3     133.4      73.3      16.7      12.1       7.5
 2025.5003   JUL   186.8     132.2      74.4      17.1      12.2       7.6
 2025.5837   AUG   186.1     130.7      75.8      16.3      12.0       7.4
 2025.6670   SEP   183.4     129.1      77.6      16.5      12.0       7.1
 2025.7503   OCT   181.4     127.8      79.8      16.9      12.2       7.1
 2025.8337   NOV   180.9     126.9      81.5      16.8      12.2       7.0
 2025.9170   DEC   180.3     126.0      83.4      16.3      12.3       6.9
 2026.0003   JAN   177.7     124.5      85.0      16.0      12.4       6.8
 2026.0837   FEB   174.1     122.9      84.4      16.1      12.6       6.7
 2026.1670   MAR   170.5     121.7      84.1      16.3      12.9       7.2
 2026.2503   APR   167.2     120.7      83.4      16.6      13.1       7.7
 2026.3337   MAY   165.3     119.5      82.3      16.8      13.3       8.6
 2026.4170   JUN   163.6     118.0      81.8      17.0      13.6       9.2
 2026.5003   JUL   160.0     116.4      81.9      17.1      13.9       9.6
 2026.5837   AUG   154.5     114.8      82.0      18.2      14.0       9.9
 2026.6670   SEP   149.2     113.3      81.4      19.4      14.1      10.2
 2026.7503   OCT   145.8     111.5      80.5      20.1      14.1      10.4
 2026.8337   NOV   143.5     109.6      79.7      20.3      14.2      10.6
 2026.9170   DEC   141.4     108.0      79.3      19.9      14.3      10.5
 2027.0003   JAN   138.7     106.5      79.3      19.2      14.3      10.1
 2027.0837   FEB   135.4     104.9      79.0      18.4      14.2       9.5
 2027.1670   MAR   131.9     103.5      79.2      18.4      14.0       9.1
 2027.2503   APR   129.2     102.2      79.1      18.7      13.7       8.9
 2027.3337   MAY   126.3     100.8      77.9      18.7      13.4       8.3
 2027.4170   JUN   121.7      99.3      76.8      18.8      12.9       7.0
 2027.5003   JUL   119.9      97.9      75.7      19.1      12.5       5.9
 2027.5837   AUG   119.2      96.7      74.3      19.4      12.1       5.7
 2027.6670   SEP   119.1      95.6      73.6      19.7      11.9       5.6
 2027.7503   OCT   118.1      94.5      73.2      20.0      11.9       5.6
 2027.8337   NOV   117.8      93.6      72.9      19.7      11.7       5.5
 2027.9170   DEC   117.5      92.6      72.7      19.0      11.5       5.6
 2028.0003   JAN   116.4      91.5      72.2      18.3      11.4       6.0
 2028.0837   FEB   115.0      90.6      71.9      17.7      11.4       5.8
 2028.1670   MAR   113.2      89.8      71.9      17.6      11.6       5.4
 2028.2503   APR   110.0      88.9      71.5      17.5      11.8       4.9
 2028.3337   MAY   105.8      87.8      71.1      17.5      12.1       4.5
 2028.4170   JUN   103.3      86.8      70.7      17.5      12.4       4.7
 2028.5003   JUL   101.8      86.1      70.4      17.8      12.5       5.2
 2028.5837   AUG   100.2      85.3      70.1      18.2      12.5       5.7
 2028.6670   SEP    97.6      84.4      69.8      18.4      12.4       6.1
 2028.7503   OCT    96.1      83.3      69.4      18.6      12.2       6.2
 2028.8337   NOV    94.2      82.2      69.3      18.4      12.2       6.4
 2028.9170   DEC    93.3      81.4      69.4      18.2      12.4       6.7
 2029.0003   JAN    93.1      80.7      69.4      18.0      12.6       7.1
 2029.0837   FEB    92.3      80.0      69.3      17.5      12.9       7.4
 2029.1670   MAR    91.1      79.1      69.2      16.8      12.9       7.5
 2029.2503   APR    90.0      78.3      68.9      17.1      12.7       7.3
 2029.3337   MAY    89.0      77.6      68.7      17.2      12.5       7.0
 2029.4170   JUN    87.9      76.9      68.6      17.3      12.4       6.9
 2029.5003   JUL    87.0      76.4      68.6      17.4      12.3       6.6
 2029.5837   AUG    86.3      75.9      68.6      17.6      12.5       6.6
 2029.6670   SEP    85.0      75.5      68.6      18.0      12.5       6.5
 2029.7503   OCT    83.6      75.0      68.6      17.9      12.4       6.4
 2029.8337   NOV    81.8      74.5      68.5      17.6      12.2       6.4
 2029.9170   DEC    79.6      73.8      68.5      17.3      11.9       6.2
 2030.0003   JAN    78.2      73.2      68.2      16.2      11.4       6.2
 2030.0837   FEB    77.4      72.6      67.9      14.7      10.8       6.2
 2030.1670   MAR    77.0      72.1      67.7      13.3      10.3       6.3
 2030.2503   APR    76.8      71.8      67.6      13.3       9.9       6.3
 2030.3337   MAY    76.6      71.5      67.5      12.9       9.4       6.1
 2030.4170   JUN    76.4      71.1      67.3      12.5       9.1       6.0
 2030.5003   JUL    76.0      70.8      67.3      12.3       8.9       5.8
 2030.5837   AUG    75.0      70.5      67.3      12.1       8.8       5.4
 2030.6670   SEP    74.0      70.1      67.3      11.3       8.5       4.9
 2030.7503   OCT    73.7      69.9      67.3      10.8       8.3       4.4
 2030.8337   NOV    73.2      69.7      67.3      10.6       8.1       4.1
 2030.9170   DEC    73.2      69.7      67.3      10.6       8.1       4.1
 2031.0003   JAN    73.3      69.9      67.3      10.9       8.2       4.0
 2031.0837   FEB    74.0      70.2      67.3      11.2       8.4       4.0
 2031.1670   MAR    74.9      70.6      67.4      11.4       8.6       3.9
 2031.2503   APR    75.6      70.9      67.5      11.6       8.7       3.7
 2031.3337   MAY    76.7      71.4      67.6      11.8       8.8       3.5
 2031.4170   JUN    78.4      72.0      67.7      11.9       8.9       3.5
 2031.5003   JUL    79.7      72.7      67.8      12.1       9.0       3.4
 2031.5837   AUG    81.1      73.4      67.9      12.4       9.3       3.4
 2031.6670   SEP    83.3      74.3      68.0      12.8       9.6       3.4
 2031.7503   OCT    86.2      75.2      68.1      13.2      10.0       3.8
 2031.8337   NOV    90.8      76.4      68.4      13.8      10.4       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
