  TABLE 3 ESTIMATES OF 13-MONTH SMOOTH SOLAR ACTIVITY FOR
  BALANCE OF CYCLE 24 WITH A MEAN CYCLE GIVEN FOR CYCLE 25

    TIME         10.7 CM SOLAR FLUX   (F10.7)      GEOMAGNETIC INDEX   (Ap)
                         PERCENTILE                    PERCENTILE
                  95.0%       50%      5.0%     95.0%       50%      5.0% 

 2018.2503   APR    72.7      71.7      70.6       8.5       7.8       6.9
 2018.3337   MAY    73.0      71.4      69.6       9.1       8.0       6.1
 2018.4170   JUN    73.1      71.2      68.8       9.6       8.2       5.8
 2018.5003   JUL    73.4      71.0      68.4      10.2       8.4       6.1
 2018.5837   AUG    73.4      70.7      68.3      10.7       8.5       6.0
 2018.6670   SEP    73.5      70.5      68.3      11.2       8.4       6.0
 2018.7503   OCT    73.9      70.5      67.3      11.4       8.5       6.4
 2018.8337   NOV    74.3      70.5      66.9      11.5       8.5       6.8
 2018.9170   DEC    74.3      70.4      66.8      11.5       8.5       6.7
 2019.0003   JAN    73.8      70.1      66.4      11.0       8.4       6.5
 2019.0837   FEB    73.2      69.8      66.2      10.4       8.4       6.5
 2019.1670   MAR    73.0      69.6      66.2      10.4       8.5       6.5
 2019.2503   APR    73.0      69.4      66.2      10.5       8.5       6.4
 2019.3337   MAY    73.0      69.2      65.8      10.6       8.5       6.3
 2019.4170   JUN    72.8      69.1      65.7      10.0       8.2       6.1
 2019.5003   JUL    72.8      69.0      66.0       9.6       7.7       5.6
 2019.5837   AUG    73.0      68.9      66.4       9.1       7.5       5.3
 2019.6670   SEP    72.9      68.8      66.5       9.4       7.6       5.1
 2019.7503   OCT    72.8      68.7      66.4       9.3       7.6       5.2
 2019.8337   NOV    72.4      68.5      66.4       9.0       7.6       5.1
 2019.9170   DEC    72.4      68.5      66.4       9.0       7.6       5.1
 2020.0003   JAN    72.5      68.7      66.4       9.2       7.7       5.1
 2020.0837   FEB    73.2      69.0      66.4       9.5       7.8       5.3
 2020.1670   MAR    74.0      69.4      66.5       9.6       7.9       5.6
 2020.2503   APR    74.8      69.7      66.6       9.8       8.0       5.7
 2020.3337   MAY    75.9      70.1      66.7       9.9       8.1       5.7
 2020.4170   JUN    77.4      70.7      66.9      10.0       8.2       5.5
 2020.5003   JUL    78.8      71.3      67.0      10.1       8.3       5.4
 2020.5837   AUG    80.2      72.0      67.1      10.5       8.5       5.3
 2020.6670   SEP    82.5      72.8      67.2      10.8       8.8       5.2
 2020.7503   OCT    85.5      73.8      67.4      11.2       9.1       5.4
 2020.8337   NOV    90.2      75.0      67.6      11.7       9.5       5.8
 2020.9170   DEC    94.6      76.4      67.8      12.5       9.8       6.0
 2021.0003   JAN    98.0      77.9      67.7      13.6      10.0       5.9
 2021.0837   FEB   103.1      79.6      67.8      14.1      10.3       5.9
 2021.1670   MAR   109.0      81.6      67.7      14.3      10.4       5.8
 2021.2503   APR   114.8      83.7      67.7      14.8      10.6       5.7
 2021.3337   MAY   122.1      86.0      67.9      15.9      10.9       5.8
 2021.4170   JUN   130.5      88.5      68.0      16.9      11.2       5.9
 2021.5003   JUL   137.0      91.3      68.3      17.1      11.3       5.9
 2021.5837   AUG   141.7      94.1      68.6      17.2      11.5       6.0
 2021.6670   SEP   146.1      96.9      68.6      17.0      11.7       5.9
 2021.7503   OCT   150.5      99.7      68.8      16.6      11.8       5.9
 2021.8337   NOV   155.4     102.6      69.3      16.4      11.8       6.0
 2021.9170   DEC   160.7     105.7      70.0      16.9      12.0       6.2
 2022.0003   JAN   165.9     108.8      70.2      16.7      12.1       6.4
 2022.0837   FEB   170.5     111.9      70.6      15.8      12.1       6.7
 2022.1670   MAR   176.4     115.2      70.8      15.9      12.4       6.8
 2022.2503   APR   183.9     118.4      71.5      16.4      12.5       6.9
 2022.3337   MAY   188.8     121.6      72.3      17.0      12.8       7.2
 2022.4170   JUN   191.4     124.4      72.7      17.5      13.2       7.6
 2022.5003   JUL   194.0     126.9      73.5      18.2      13.6       7.8
 2022.5837   AUG   197.0     129.2      74.1      18.2      13.7       7.8
 2022.6670   SEP   201.6     131.3      74.4      18.2      13.7       8.0
 2022.7503   OCT   207.7     133.8      74.9      18.4      13.8       8.2
 2022.8337   NOV   211.8     136.4      75.2      18.7      14.0       8.7
 2022.9170   DEC   214.6     138.9      75.5      19.1      14.0       9.3
 2023.0003   JAN   219.1     141.1      75.4      19.2      13.9       9.8
 2023.0837   FEB   223.5     143.0      75.4      19.3      13.7       9.5
 2023.1670   MAR   225.5     144.7      75.5      19.5      13.7       9.4
 2023.2503   APR   226.5     146.4      75.9      20.0      13.6       8.9
 2023.3337   MAY   228.4     147.7      76.3      20.7      13.5       8.4
 2023.4170   JUN   230.5     148.6      77.0      20.4      13.3       8.1
 2023.5003   JUL   233.4     149.5      78.3      19.3      13.1       8.3
 2023.5837   AUG   236.5     149.9      79.0      18.5      12.9       8.3
 2023.6670   SEP   237.8     150.1      80.0      18.0      12.8       8.5
 2023.7503   OCT   236.0     150.4      81.5      17.6      12.7       8.8
 2023.8337   NOV   233.9     150.6      83.2      17.5      12.6       8.8
 2023.9170   DEC   235.0     150.7      84.9      17.3      12.6       8.7
 2024.0003   JAN   235.5     149.8      85.8      17.1      12.8       8.7
 2024.0837   FEB   233.2     148.3      87.1      16.9      13.2       8.7
 2024.1670   MAR   230.0     147.4      88.8      16.9      13.3       8.5
 2024.2503   APR   226.5     147.0      90.1      17.4      13.2       8.0
 2024.3337   MAY   224.8     147.1      92.3      18.3      13.3       8.4
 2024.4170   JUN   225.1     147.5      93.5      20.0      13.6       8.9
 2024.5003   JUL   225.4     147.7      94.9      21.3      13.9       8.9
 2024.5837   AUG   224.2     147.4      95.1      21.9      14.0       9.1
 2024.6670   SEP   222.6     146.8      94.8      23.1      14.3       9.3
 2024.7503   OCT   222.2     146.2      94.8      23.6      14.5       9.5
 2024.8337   NOV   222.2     146.0      96.2      22.8      14.5       9.7
 2024.9170   DEC   221.8     145.9      97.1      22.7      14.5       9.9
 2025.0003   JAN   220.8     145.1      96.6      21.9      14.4      10.0
 2025.0837   FEB   218.6     143.8      95.8      20.0      14.4      10.0
 2025.1670   MAR   215.4     142.2      95.7      20.3      14.5      10.2
 2025.2503   APR   212.7     140.5      96.2      21.1      14.6      10.0
 2025.3337   MAY   210.0     138.8      95.7      21.1      14.6       9.2
 2025.4170   JUN   206.7     137.5      94.9      20.6      14.6       8.9
 2025.5003   JUL   205.6     136.1      95.5      20.0      14.5       9.0
 2025.5837   AUG   203.6     134.3      96.5      19.9      14.5       9.0
 2025.6670   SEP   200.2     132.4      95.6      20.7      14.7       8.9
 2025.7503   OCT   196.7     130.9      93.9      21.6      15.1       9.0
 2025.8337   NOV   194.2     129.6      93.1      21.8      15.3       9.0
 2025.9170   DEC   192.2     128.2      92.9      21.8      15.6       8.9
 2026.0003   JAN   188.3     126.5      91.1      21.8      15.7       8.8
 2026.0837   FEB   183.7     124.6      87.6      21.4      15.8       8.5
 2026.1670   MAR   179.3     123.3      87.2      20.5      15.8       8.6
 2026.2503   APR   175.5     122.2      88.1      20.7      15.8       8.8
 2026.3337   MAY   173.2     121.0      86.6      21.0      16.0       9.6
 2026.4170   JUN   171.3     119.7      85.7      21.1      16.2      10.1
 2026.5003   JUL   167.0     118.0      85.0      20.4      16.4      10.2
 2026.5837   AUG   160.6     116.0      84.2      19.6      16.2      10.3
 2026.6670   SEP   154.7     114.2      82.9      19.2      16.0      10.5
 2026.7503   OCT   151.1     112.4      81.9      19.7      15.7      10.6
 2026.8337   NOV   148.7     110.4      81.5      19.7      15.5      11.5
 2026.9170   DEC   146.3     108.7      81.5      20.1      15.5      11.3
 2027.0003   JAN   143.3     107.3      81.4      20.5      15.6      11.0
 2027.0837   FEB   140.2     105.7      80.3      20.3      15.4      11.2
 2027.1670   MAR   136.7     104.2      79.9      20.3      15.1      10.9
 2027.2503   APR   133.0     102.7      79.9      20.6      14.8      10.7
 2027.3337   MAY   128.7     101.2      79.3      20.9      14.5      10.3
 2027.4170   JUN   122.8      99.6      78.4      21.4      14.2       9.4
 2027.5003   JUL   118.6      98.1      77.1      22.1      14.0       8.7
 2027.5837   AUG   117.8      96.9      74.9      22.8      13.9       8.9
 2027.6670   SEP   117.9      95.8      73.9      23.3      13.9       8.9
 2027.7503   OCT   118.4      94.8      73.3      23.5      13.9       8.8
 2027.8337   NOV   118.8      93.9      73.0      23.4      13.9       8.9
 2027.9170   DEC   118.0      92.9      72.8      22.9      13.8       9.2
 2028.0003   JAN   116.6      91.6      72.4      21.9      13.6       9.3
 2028.0837   FEB   115.0      90.4      72.0      21.0      13.5       9.5
 2028.1670   MAR   112.9      89.4      71.3      20.5      13.6       9.4
 2028.2503   APR   109.3      88.3      70.7      20.1      13.7       9.3
 2028.3337   MAY   105.0      87.0      70.4      19.7      13.9       9.4
 2028.4170   JUN   102.3      86.0      70.0      19.3      13.9       9.6
 2028.5003   JUL   100.8      85.2      69.8      18.7      13.8       9.6
 2028.5837   AUG    99.3      84.3      69.8      17.9      13.5       9.5
 2028.6670   SEP    97.3      83.4      69.6      18.0      13.4       9.3
 2028.7503   OCT    95.7      82.2      69.2      18.1      13.2       8.9
 2028.8337   NOV    93.8      81.1      69.0      17.8      13.0       8.3
 2028.9170   DEC    92.7      80.4      68.8      17.4      12.8       7.8
 2029.0003   JAN    92.4      79.7      68.8      16.9      12.7       7.3
 2029.0837   FEB    91.5      79.0      68.6      16.2      12.7       6.8
 2029.1670   MAR    90.5      78.3      68.4      15.3      12.6       6.1
 2029.2503   APR    89.7      77.6      68.1      15.3      12.4       5.7
 2029.3337   MAY    88.9      76.9      67.9      15.4      12.3       5.8
 2029.4170   JUN    87.8      76.2      67.7      15.5      12.3       6.0
 2029.5003   JUL    86.9      75.6      67.7      15.5      12.2       6.4
 2029.5837   AUG    86.1      75.1      67.8      15.7      12.1       6.7
 2029.6670   SEP    84.7      74.6      67.8      16.0      12.0       6.7
 2029.7503   OCT    83.3      74.1      67.8      15.9      11.8       6.7
 2029.8337   NOV    81.3      73.5      67.7      15.6      11.5       6.6
 2029.9170   DEC    79.0      72.9      67.7      15.3      11.2       6.7
 2030.0003   JAN    77.5      72.2      67.4      14.2      10.8       6.6
 2030.0837   FEB    76.6      71.5      67.1      12.8      10.4       6.5
 2030.1670   MAR    76.2      71.0      67.0      11.8      10.0       6.5
 2030.2503   APR    76.0      70.6      66.9      11.9       9.6       6.4
 2030.3337   MAY    75.8      70.3      66.8      11.6       9.2       6.4
 2030.4170   JUN    75.7      69.9      66.6      11.1       8.9       6.1
 2030.5003   JUL    75.3      69.6      66.5      10.9       8.5       5.6
 2030.5837   AUG    74.3      69.3      66.4      10.6       8.3       5.3
 2030.6670   SEP    73.4      69.0      66.4       9.8       8.2       5.5
 2030.7503   OCT    73.2      68.7      66.4       9.3       8.0       5.3
