Solar Flare Watch2008: sunspot number and solar flux
| Month | Sunspot number | F10.7 flux |
|---|---|---|
| January | 5.2 | 74.0 |
| February | 3.9 | 71.0 |
| March | 15.9 | 73.0 |
| April | 4.9 | 70.2 |
| May | 5.7 | 68.3 |
| June | 4.3 | 65.8 |
| July | 1.1 | 65.7 |
| August | 0.0 | 66.2 |
| September | 1.5 | 67.0 |
| October | 5.2 | 68.2 |
| November | 6.8 | 68.5 |
| December | 1.3 | 69.0 |
About this page
Monthly sunspot number and 10.7 cm solar radio flux in 2008, from NOAA SWPC solar-cycle data.