| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/05/17 | 6 | 70 | CAO | S05W76 | |
| 2004/05/18 | 3 | 30 | CAO | S08W89 |
| B | C | M |
|---|---|---|
| 4 | 1 | 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.01 | 2004/05/17 | 04:11 | 04:17 | 04:22 | |
| 2 | C1.17 | 2004/05/17 | 07:08 | 07:12 | 07:16 | |
| 3 | B6.77 | 2004/05/17 | 15:43 | 15:48 | 16:03 | |
| 4 | B6.49 | 2004/05/16 | 18:02 | 18:08 | 18:34 | |
| 5 | B5.96 | 2004/05/18 | 06:08 | 06:12 | 06:22 | |
| 6 | B5.71 | 2004/05/17 | 14:12 | 14:15 | 14:21 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/31 | M7.11 |
| Last geomagnetic storm | 2026/01/02 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| January 2026 | 126.7 +2.7 |
| Last 30 days | 110.1 +4.8 |