  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% 

 2020.3337   MAY    71.4      70.9      70.3       5.7       5.2       4.9
 2020.4170   JUN    72.8      71.4      70.6       6.2       5.3       4.5
 2020.5003   JUL    74.0      72.0      70.4       6.6       5.2       4.2
 2020.5837   AUG    75.1      72.7      70.3       7.2       5.2       4.1
 2020.6670   SEP    76.9      73.5      70.3       7.3       5.2       4.0
 2020.7503   OCT    79.2      74.3      70.3       7.5       5.4       4.0
 2020.8337   NOV    83.0      75.4      70.6       7.7       5.7       4.1
 2020.9170   DEC    86.2      76.6      71.1       7.8       5.8       4.3
 2021.0003   JAN    88.7      78.0      70.9       7.8       5.6       3.8
 2021.0837   FEB    92.6      79.6      70.7       7.9       5.6       3.4
 2021.1670   MAR    97.1      81.3      70.9       8.4       5.6       3.4
 2021.2503   APR   101.5      83.2      70.8       9.0       5.6       3.1
 2021.3337   MAY   106.5      85.3      70.8      10.1       5.8       2.9
 2021.4170   JUN   112.9      87.4      71.1      10.9       6.0       2.9
 2021.5003   JUL   117.8      89.7      71.6      11.0       6.1       2.8
 2021.5837   AUG   121.2      92.3      72.2      11.0       6.2       2.8
 2021.6670   SEP   124.3      94.9      72.8      10.5       6.2       2.8
 2021.7503   OCT   127.5      97.5      73.3       9.9       6.1       2.9
 2021.8337   NOV   133.0     100.1      74.5       9.3       6.1       3.1
 2021.9170   DEC   139.4     102.9      76.0       8.8       6.1       3.2
 2022.0003   JAN   145.3     105.8      76.3       8.8       6.4       3.6
 2022.0837   FEB   151.2     108.7      76.5      10.0       6.7       4.2
 2022.1670   MAR   158.2     111.6      77.1      10.4       7.2       4.8
 2022.2503   APR   164.9     114.5      78.1      10.3       7.6       5.0
 2022.3337   MAY   169.9     117.6      79.6      10.5       7.9       5.3
 2022.4170   JUN   172.8     120.5      81.5      11.1       8.1       4.9
 2022.5003   JUL   175.4     122.9      82.8      11.8       8.2       4.5
 2022.5837   AUG   178.1     125.0      83.0      11.9       8.4       4.4
 2022.6670   SEP   182.9     127.1      83.1      12.5       8.8       4.6
 2022.7503   OCT   188.9     129.6      84.3      13.4       9.2       4.9
 2022.8337   NOV   193.4     132.0      84.9      14.1       9.4       4.5
 2022.9170   DEC   196.5     134.2      85.2      14.4       9.4       4.1
 2023.0003   JAN   200.7     136.2      86.4      14.3       9.8       3.8
 2023.0837   FEB   205.3     138.0      88.8      13.9      10.0       3.7
 2023.1670   MAR   208.2     139.6      91.6      14.0      10.0       3.6
 2023.2503   APR   210.4     141.1      94.0      14.4      10.0       3.5
 2023.3337   MAY   212.6     142.2      95.2      15.2       9.9       3.3
 2023.4170   JUN   214.9     143.0      94.8      15.4       9.9       3.3
 2023.5003   JUL   218.0     143.8      93.6      15.0      10.1       3.7
 2023.5837   AUG   221.0     144.1      93.4      14.8      10.2       4.3
 2023.6670   SEP   222.1     144.4      94.2      14.3      10.2       4.6
 2023.7503   OCT   220.5     144.7      95.2      13.7      10.0       4.6
 2023.8337   NOV   219.8     145.0      96.9      13.7      10.0       4.8
 2023.9170   DEC   220.8     145.1      98.7      13.5      10.1       4.9
 2024.0003   JAN   220.9     144.5      99.8      12.8       9.8       4.7
 2024.0837   FEB   218.1     143.5     100.6      12.5       9.7       4.8
 2024.1670   MAR   214.1     142.8     101.6      12.3       9.2       5.0
 2024.2503   APR   210.4     142.6     102.9      12.2       8.7       4.8
 2024.3337   MAY   208.4     142.9     104.1      12.4       8.6       4.6
 2024.4170   JUN   208.8     143.3     105.1      13.2       8.6       4.3
 2024.5003   JUL   208.7     143.4     105.7      14.1       8.6       4.2
 2024.5837   AUG   206.9     143.3     102.8      14.5       8.7       4.5
 2024.6670   SEP   204.7     143.0      99.9      15.2       8.6       4.5
 2024.7503   OCT   203.9     142.6      96.8      15.3       8.5       4.3
 2024.8337   NOV   204.4     142.4      95.2      14.8       8.7       4.5
 2024.9170   DEC   205.0     142.1      94.1      14.7       8.8       4.5
 2025.0003   JAN   203.9     141.4      92.6      13.9       8.7       5.5
 2025.0837   FEB   200.9     140.3      90.9      12.5       8.7       5.7
 2025.1670   MAR   197.5     138.8      89.0      12.5       9.0       6.0
 2025.2503   APR   194.8     137.2      88.3      13.0       9.4       6.1
 2025.3337   MAY   191.7     135.6      87.3      13.6       9.6       6.4
 2025.4170   JUN   188.1     134.4      86.9      14.7      10.0       6.6
 2025.5003   JUL   185.5     133.0      86.7      15.6      10.4       6.9
 2025.5837   AUG   182.3     131.4      86.6      16.4      10.2       6.8
 2025.6670   SEP   178.7     129.6      87.0      16.8      10.3       6.6
 2025.7503   OCT   176.1     128.1      87.7      17.4      10.6       6.7
 2025.8337   NOV   173.5     127.0      88.0      17.3      10.6       6.5
 2025.9170   DEC   171.2     126.0      88.6      16.7      10.6       6.3
 2026.0003   JAN   168.1     124.5      89.4      15.7      10.6       6.2
 2026.0837   FEB   164.6     122.7      89.2      14.4      10.7       6.1
 2026.1670   MAR   162.0     121.6      89.0      13.9      11.2       6.6
 2026.2503   APR   159.8     120.6      88.9      14.2      11.6       7.2
 2026.3337   MAY   157.7     119.3      88.6      14.9      11.9       8.1
 2026.4170   JUN   154.4     117.8      87.9      15.0      12.0       7.8
 2026.5003   JUL   150.9     116.1      87.6      14.7      12.2       8.0
 2026.5837   AUG   146.0     114.5      87.1      15.7      12.4       8.6
 2026.6670   SEP   141.1     112.9      86.1      17.1      12.5       8.9
 2026.7503   OCT   137.4     111.1      84.8      17.9      12.6       9.8
 2026.8337   NOV   134.6     109.1      83.7      18.4      12.9       9.4
 2026.9170   DEC   132.8     107.4      82.8      18.2      13.1       9.1
 2027.0003   JAN   129.9     105.9      82.0      18.7      13.3       8.8
 2027.0837   FEB   126.5     104.3      81.4      18.6      13.4       8.4
 2027.1670   MAR   123.8     102.8      81.2      18.7      13.3       8.2
 2027.2503   APR   122.7     101.5      80.6      19.2      13.2       8.2
 2027.3337   MAY   122.5     100.1      79.9      19.5      13.0       8.0
 2027.4170   JUN   122.4      98.5      79.1      20.0      12.7       7.0
 2027.5003   JUL   122.3      97.2      78.3      20.5      12.3       6.1
 2027.5837   AUG   121.7      96.0      77.4      20.9      12.0       5.9
 2027.6670   SEP   121.5      94.9      76.5      21.2      11.8       5.8
 2027.7503   OCT   120.4      93.8      76.0      21.5      11.8       5.7
 2027.8337   NOV   118.4      93.0      75.8      21.2      11.5       5.6
 2027.9170   DEC   116.2      92.0      75.3      20.5      11.2       5.5
 2028.0003   JAN   114.7      91.0      74.4      19.5      11.0       5.7
 2028.0837   FEB   114.0      90.0      73.7      18.8      10.9       6.0
 2028.1670   MAR   113.1      89.2      72.9      18.5      11.2       6.2
 2028.2503   APR   110.7      88.2      72.6      18.2      11.2       5.5
 2028.3337   MAY   107.2      87.1      72.4      18.0      11.5       4.9
 2028.4170   JUN   104.5      86.1      72.3      17.8      11.7       5.0
 2028.5003   JUL   102.5      85.3      72.0      17.6      11.9       5.5
 2028.5837   AUG   101.4      84.5      71.9      18.0      11.8       6.0
 2028.6670   SEP    99.6      83.6      71.7      18.2      11.7       6.3
 2028.7503   OCT    97.7      82.5      71.4      18.3      11.5       6.3
 2028.8337   NOV    95.8      81.5      71.1      18.1      11.5       6.4
 2028.9170   DEC    94.7      80.9      71.0      18.0      11.7       6.6
 2029.0003   JAN    94.3      80.2      70.9      17.7      12.0       7.0
 2029.0837   FEB    93.1      79.5      70.9      17.1      12.2       7.2
 2029.1670   MAR    90.9      78.7      70.7      16.3      12.2       7.1
 2029.2503   APR    89.0      78.0      70.5      16.3      11.8       6.9
 2029.3337   MAY    87.5      77.3      70.2      16.3      11.5       6.7
 2029.4170   JUN    86.1      76.7      70.0      16.3      11.3       6.4
 2029.5003   JUL    85.4      76.1      70.0      16.3      11.2       5.8
 2029.5837   AUG    84.8      75.7      69.8      16.7      11.3       5.7
 2029.6670   SEP    83.5      75.2      69.6      17.1      11.4       6.1
 2029.7503   OCT    82.0      74.8      68.9      17.1      11.3       6.5
 2029.8337   NOV    80.1      74.2      68.8      16.9      11.2       6.6
 2029.9170   DEC    79.1      73.6      68.6      16.6      10.9       6.5
 2030.0003   JAN    78.2      72.9      68.4      15.5      10.5       6.4
 2030.0837   FEB    77.5      72.4      68.1      13.9       9.9       6.3
 2030.1670   MAR    77.0      71.9      68.1      12.7       9.5       6.0
 2030.2503   APR    76.8      71.6      68.0      12.8       9.1       5.9
 2030.3337   MAY    76.5      71.3      67.8      12.5       8.7       5.8
 2030.4170   JUN    76.2      70.9      67.6      12.2       8.5       5.7
 2030.5003   JUL    75.4      70.6      67.7      12.0       8.4       5.6
 2030.5837   AUG    74.4      70.3      67.5      11.7       8.2       5.2
 2030.6670   SEP    73.3      70.0      67.2      11.0       7.9       4.6
 2030.7503   OCT    72.5      69.8      66.9      10.5       7.7       4.1
 2030.8337   NOV    72.1      69.6      66.9      10.2       7.5       3.8
 2030.9170   DEC    72.2      69.7      66.9      10.3       7.5       3.9
 2031.0003   JAN    72.4      69.8      66.9      10.6       7.7       3.7
 2031.0837   FEB    73.2      70.1      67.0      11.0       8.0       3.8
 2031.1670   MAR    74.1      70.5      67.1      11.2       8.2       3.8
 2031.2503   APR    74.9      70.9      67.2      11.4       8.3       3.5
 2031.3337   MAY    76.2      71.3      67.4      11.6       8.5       3.4
 2031.4170   JUN    77.9      71.9      67.5      11.8       8.6       3.4
 2031.5003   JUL    79.4      72.6      67.7      12.0       8.8       3.3
 2031.5837   AUG    80.8      73.4      67.8      12.4       9.1       3.3
 2031.6670   SEP    83.2      74.2      68.0      12.7       9.4       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
