| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/03/28 | 5 | 50 | DSO | S15E50 | |
| 2004/03/29 | 7 | 50 | DAI | S14E40 | |
| 2004/03/30 | 19 | 50 | DRO | S14E25 | |
| 2004/03/31 | 2 | 10 | AXX | S15E12 | |
| 2004/04/01 | 3 | 10 | BXO | S15W01 | |
| 2004/04/02 | 1 | 0 | AXX | S15W14 | |
| 2004/04/03 | 1 | 10 | AXX | S15W27 |
| C |
|---|
| 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.86 | 2004/03/28 | 03:38 | 03:55 | 04:22 |
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| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/04 | M1.8 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| February 2026 | 133 +9 |
| Last 30 days | 120.6 +10.9 |