  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% 

 2023.1670   MAR   158.5     154.1     150.0      12.0      10.8      10.2
 2023.2503   APR   165.9     155.6     148.6      12.7      10.8       9.6
 2023.3337   MAY   172.7     156.7     147.8      12.8      10.6       9.2
 2023.4170   JUN   177.6     157.4     146.9      12.9      10.5       8.9
 2023.5003   JUL   183.3     157.9     144.9      13.2      10.5       9.2
 2023.5837   AUG   187.6     158.1     143.0      13.4      10.7       9.4
 2023.6670   SEP   190.9     158.3     139.5      13.5      10.8       9.3
 2023.7503   OCT   193.4     158.4     137.0      13.8      10.8       9.0
 2023.8337   NOV   195.5     158.2     134.8      14.0      10.8       8.8
 2023.9170   DEC   199.2     157.9     133.0      14.2      10.9       8.9
 2024.0003   JAN   200.1     157.0     132.2      14.3      10.9       8.8
 2024.0837   FEB   196.1     155.7     131.3      14.9      11.1       8.7
 2024.1670   MAR   192.6     154.7     128.6      14.8      11.0       8.4
 2024.2503   APR   192.7     154.3     124.9      14.3      10.7       7.9
 2024.3337   MAY   193.9     154.5     123.2      13.9      10.7       8.2
 2024.4170   JUN   194.0     154.7     123.5      14.3      10.8       8.1
 2024.5003   JUL   193.6     154.6     122.9      15.3      10.9       8.0
 2024.5837   AUG   192.5     154.3     122.3      15.9      11.1       8.3
 2024.6670   SEP   190.5     153.9     120.2      16.8      11.3       8.4
 2024.7503   OCT   186.6     153.5     117.0      17.0      11.3       8.4
 2024.8337   NOV   182.6     153.2     115.3      16.4      11.4       8.5
 2024.9170   DEC   179.1     152.8     114.0      16.4      11.5       8.3
 2025.0003   JAN   176.5     152.0     112.5      16.4      11.6       8.3
 2025.0837   FEB   177.3     150.7     111.3      17.2      11.8       8.0
 2025.1670   MAR   177.3     149.0     109.2      17.2      12.0       8.2
 2025.2503   APR   177.2     147.2     107.5      16.9      12.2       8.3
 2025.3337   MAY   177.0     145.7     105.7      17.1      12.5       8.5
 2025.4170   JUN   177.4     144.3     104.6      17.8      12.9       8.7
 2025.5003   JUL   178.2     142.6     103.8      18.6      13.2       8.9
 2025.5837   AUG   177.9     140.6     102.9      19.4      13.3       8.9
 2025.6670   SEP   175.5     138.3     102.1      20.2      13.5       9.2
 2025.7503   OCT   173.0     136.3     100.8      20.5      13.7       9.3
 2025.8337   NOV   172.3     134.6      99.7      20.7      13.8       9.2
 2025.9170   DEC   172.7     133.1      98.4      21.3      14.0       9.1
 2026.0003   JAN   171.1     131.3      96.1      22.0      14.2       9.1
 2026.0837   FEB   168.1     129.3      93.2      22.1      14.3       8.9
 2026.1670   MAR   164.5     127.9      92.1      22.0      14.6       9.3
 2026.2503   APR   161.2     126.6      91.9      22.3      15.0       9.8
 2026.3337   MAY   159.3     125.1      91.6      22.7      15.4      10.7
 2026.4170   JUN   158.4     123.3      91.3      22.8      15.6      11.3
 2026.5003   JUL   155.4     121.3      90.8      22.2      15.6      11.4
 2026.5837   AUG   149.7     119.2      90.0      21.3      15.7      11.6
 2026.6670   SEP   145.4     117.4      88.6      20.8      15.6      11.9
 2026.7503   OCT   143.2     115.4      87.1      21.4      15.6      11.7
 2026.8337   NOV   142.1     113.3      85.0      21.5      15.8      11.6
 2026.9170   DEC   140.5     111.6      83.5      21.8      15.9      11.5
 2027.0003   JAN   138.0     110.0      83.1      22.1      16.0      11.3
 2027.0837   FEB   135.2     108.3      82.5      21.7      15.8      11.2
 2027.1670   MAR   132.3     106.5      81.7      21.4      15.5      11.0
 2027.2503   APR   129.7     104.9      80.3      21.5      15.2      10.9
 2027.3337   MAY   127.6     103.2      78.0      21.7      14.9      10.4
 2027.4170   JUN   126.3     101.4      76.7      22.1      14.6       9.4
 2027.5003   JUL   124.9      99.8      75.9      22.6      14.2       8.4
 2027.5837   AUG   123.8      98.5      74.7      23.0      13.9       8.0
 2027.6670   SEP   123.3      97.3      73.9      23.3      13.7       7.8
 2027.7503   OCT   122.3      96.2      73.5      23.6      13.7       7.8
 2027.8337   NOV   120.5      95.3      73.3      23.5      13.6       8.0
 2027.9170   DEC   118.4      94.3      72.8      23.1      13.6       8.5
 2028.0003   JAN   116.6      93.0      72.1      22.5      13.5       9.1
 2028.0837   FEB   115.8      91.9      71.6      21.9      13.6       8.8
 2028.1670   MAR   114.6      90.8      71.4      21.8      13.8       8.4
 2028.2503   APR   112.0      89.7      71.3      21.6      13.9       7.8
 2028.3337   MAY   108.7      88.4      71.3      21.4      14.1       7.2
 2028.4170   JUN   106.1      87.3      71.4      21.0      14.2       7.1
 2028.5003   JUL   103.6      86.4      71.3      20.3      14.2       7.4
 2028.5837   AUG   101.8      85.5      71.3      19.7      14.0       7.9
 2028.6670   SEP   100.6      84.5      71.5      19.9      13.9       8.2
 2028.7503   OCT    98.7      83.3      71.4      20.0      13.6       8.1
 2028.8337   NOV    96.6      82.3      70.8      19.7      13.5       8.1
 2028.9170   DEC    95.4      81.6      70.8      19.3      13.4       8.1
 2029.0003   JAN    94.7      80.9      70.8      18.8      13.4       8.2
 2029.0837   FEB    93.8      80.2      70.5      18.1      13.4       8.2
 2029.1670   MAR    92.2      79.5      70.4      17.1      13.3       7.8
 2029.2503   APR    91.5      78.8      70.2      17.2      13.0       7.3
 2029.3337   MAY    90.7      78.1      70.1      17.3      12.9       7.0
 2029.4170   JUN    89.6      77.5      70.1      17.4      12.8       6.7
 2029.5003   JUL    88.7      76.9      70.1      17.5      12.8       6.5
 2029.5837   AUG    87.7      76.4      69.9      17.7      12.8       6.6
 2029.6670   SEP    86.3      75.9      69.8      18.1      12.8       6.4
 2029.7503   OCT    84.7      75.4      69.8      18.1      12.8       6.2
 2029.8337   NOV    82.7      74.8      69.7      17.8      12.7       6.2
 2029.9170   DEC    80.5      74.2      69.5      17.5      12.4       6.0
 2030.0003   JAN    79.2      73.5      69.2      16.5      12.1       5.9
 2030.0837   FEB    78.2      72.8      68.9      15.1      11.7       5.8
 2030.1670   MAR    77.8      72.4      68.7      14.1      11.3       5.9
 2030.2503   APR    77.6      72.0      68.4      14.2      10.9       6.0
 2030.3337   MAY    77.4      71.6      68.1      13.9      10.5       6.0
 2030.4170   JUN    77.2      71.3      67.9      13.4      10.1       5.8
 2030.5003   JUL    76.4      71.0      67.8      13.1       9.8       5.8
 2030.5837   AUG    75.3      70.7      67.7      12.8       9.5       5.7
 2030.6670   SEP    74.3      70.4      67.3      12.0       9.3       5.7
 2030.7503   OCT    73.9      70.2      67.3      11.5       9.0       5.4
 2030.8337   NOV    73.5      70.0      67.3      11.3       8.8       5.0
 2030.9170   DEC    73.5      70.0      67.3      11.3       8.8       5.0
 2031.0003   JAN    73.6      70.1      67.3      11.5       8.8       4.8
 2031.0837   FEB    74.2      70.4      67.3      11.8       9.0       4.7
 2031.1670   MAR    75.1      70.8      67.4      11.8       9.1       4.6
 2031.2503   APR    75.8      71.1      67.5      12.0       9.1       4.3
 2031.3337   MAY    76.9      71.5      67.6      12.1       9.2       4.0
 2031.4170   JUN    78.5      72.1      67.7      12.2       9.2       3.9
 2031.5003   JUL    79.9      72.8      67.8      12.3       9.3       3.7
 2031.5837   AUG    81.2      73.5      67.9      12.6       9.4       3.6
 2031.6670   SEP    83.4      74.3      68.0      12.9       9.7       3.6
 2031.7503   OCT    86.3      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
