Solar Flare Watch2015: sunspot number and solar flux
| Month | Sunspot number | F10.7 flux |
|---|---|---|
| January | 101.3 | 142.0 |
| February | 70.7 | 128.9 |
| March | 61.7 | 126.9 |
| April | 72.6 | 129.0 |
| May | 83.0 | 120.0 |
| June | 77.4 | 128.5 |
| July | 68.4 | 107.0 |
| August | 61.7 | 105.9 |
| September | 72.5 | 102.0 |
| October | 59.6 | 104.0 |
| November | 61.9 | 109.7 |
| December | 54.1 | 112.5 |
About this page
Monthly sunspot number and 10.7 cm solar radio flux in 2015, from NOAA SWPC solar-cycle data.