| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/09/06 | 7 | 30 | BXO | S06E35 | |
| 2004/09/07 | 12 | 50 | DSO | S07E19 | |
| 2004/09/08 | 15 | 90 | DAI | S06E06 | |
| 2004/09/09 | 21 | 90 | DAI | S05W09 | |
| 2004/09/10 | 17 | 100 | DAO | S06W24 | |
| 2004/09/11 | 18 | 130 | DSI | S06W78 | |
| 2004/09/12 | 8 | 80 | CSO | S06W51 | |
| 2004/09/13 | 2 | 80 | HSX | S06W66 | |
| 2004/09/14 | 2 | 60 | HAX | S04W81 | |
| 2004/09/15 | 1 | 60 | HAX | S06W95 |
| B | C |
|---|---|
| 1 | 6 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C2.88 | 2004/09/12 | 18:28 | 18:34 | 18:42 | |
| 2 | C1.57 | 2004/09/07 | 07:06 | 07:38 | 08:03 | |
| 3 | C1.56 | 2004/09/08 | 19:57 | 20:02 | 20:10 | |
| 4 | C1.48 | 2004/09/13 | 00:01 | 00:08 | 00:13 | |
| 5 | C1.39 | 2004/09/08 | 14:53 | 14:58 | 15:05 | |
| 6 | C1.3 | 2004/09/08 | 03:41 | 03:49 | 03:57 | |
| 7 | B9.45 | 2004/09/12 | 22:38 | 22:43 | 22:48 |
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| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/02/25 | M2.4 |
| Last geomagnetic storm | 2026/03/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (5%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| March 2026 | 75.5 -37.1 |
| Last 30 days | 61.4 -62.2 |