| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/04/02 | 1 | 60 | HSX | S12E74 | |
| 2004/04/03 | 1 | 60 | HSX | S12E64 | |
| 2004/04/04 | 4 | 70 | DSO | S12E51 | |
| 2004/04/05 | 11 | 120 | CSO | S16E40 | |
| 2004/04/06 | 12 | 170 | DAO | S15E25 | |
| 2004/04/07 | 15 | 130 | DAI | S15E14 | |
| 2004/04/08 | 9 | 150 | DAO | S17E01 | |
| 2004/04/09 | 11 | 140 | DAO | S16W13 | |
| 2004/04/10 | 8 | 120 | CSO | S15W26 | |
| 2004/04/11 | 10 | 150 | CSO | S15W38 | |
| 2004/04/12 | 6 | 90 | CSO | S15W55 | |
| 2004/04/13 | 5 | 100 | CAO | S15W68 | |
| 2004/04/14 | 1 | 60 | HAX | S13W80 | |
| 2004/04/15 | 1 | 40 | HRX | S13W92 |
| B | C | M |
|---|---|---|
| 8 | 13 | 4 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M3.44 | 2004/04/06 | 12:30 | 13:28 | 13:46 | |
| 2 | M2.47 | 2004/04/05 | 05:37 | 05:55 | 06:13 | |
| 3 | M1.39 | 2004/04/11 | 03:54 | 04:19 | 04:35 | |
| 4 | M1.06 | 2004/04/08 | 09:53 | 10:19 | 10:47 | |
| 5 | C4.32 | 2004/04/04 | 16:02 | 16:26 | 16:39 | |
| 6 | C4.12 | 2004/04/09 | 20:13 | 20:40 | 21:02 | |
| 7 | C3.31 | 2004/04/12 | 02:20 | 02:25 | 02:28 | |
| 8 | C2.26 | 2004/04/11 | 23:00 | 23:08 | 23:14 | |
| 9 | C1.91 | 2004/04/08 | 13:05 | 13:20 | 13:35 | |
| 10 | C1.87 | 2004/04/12 | 12:22 | 12:30 | 12:39 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/10 | M1.9 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 157.7 +65.9 |
| Last 30 days | 108.9 +11.4 |