| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/04/17 | 4 | 40 | CSO | S09E68 | |
| 2004/04/18 | 3 | 10 | BXO | S09E55 | |
| 2004/04/19 | 6 | 30 | ERO | S08E40 | |
| 2004/04/20 | 25 | 80 | DAI | S07E27 | |
| 2004/04/21 | 10 | 70 | DAO | S07E13 | |
| 2004/04/22 | 11 | 50 | CAO | S06E00 | |
| 2004/04/23 | 6 | 30 | CSO | S07W14 | |
| 2004/04/24 | 9 | 40 | CSO | S07W26 | |
| 2004/04/25 | 11 | 10 | BXO | S08W38 |
| B | C |
|---|---|
| 6 | 1 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.24 | 2004/04/16 | 19:15 | 19:23 | 19:30 | |
| 2 | B5.96 | 2004/04/19 | 20:39 | 20:43 | 20:49 | |
| 3 | B5.42 | 2004/04/17 | 04:49 | 05:01 | 05:06 | |
| 4 | B3.98 | 2004/04/19 | 23:39 | 23:45 | 23:49 | |
| 5 | B3.88 | 2004/04/16 | 23:08 | 23:17 | 23:30 | |
| 6 | B2.09 | 2004/04/28 | 04:47 | 04:54 | 05:00 | |
| 7 | B2.06 | 2004/04/28 | 11:58 | 12:05 | 12:10 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/09 | M1.1 |
| 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 | 160.6 +68.8 |
| Last 30 days | 108.7 +12.8 |