| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2005/05/12 | 4 | 110 | DAO | S14E70 | |
| 2005/05/13 | 8 | 150 | DAO | S14E57 | |
| 2005/05/14 | 14 | 200 | DAO | S15E45 | |
| 2005/05/15 | 13 | 130 | DAO | S16E31 | |
| 2005/05/16 | 19 | 140 | DAI | S15E16 | |
| 2005/05/17 | 28 | 190 | EAI | S16E04 | |
| 2005/05/18 | 24 | 140 | EAI | S14W10 | |
| 2005/05/19 | 17 | 120 | EAI | S16W24 | |
| 2005/05/20 | 2 | 10 | BXO | S16W35 |
| B | C | M |
|---|---|---|
| 11 | 18 | 5 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M5.05 | 2005/05/15 | 22:27 | 22:36 | 22:42 | |
| 2 | M2.69 | 2005/05/17 | 02:31 | 02:39 | 02:52 | |
| 3 | M2.31 | 2005/05/16 | 08:56 | 09:08 | 09:15 | |
| 4 | M2.1 | 2005/05/16 | 02:33 | 02:43 | 02:50 | |
| 5 | M1.2 | 2005/05/17 | 03:58 | 04:03 | 04:05 | |
| 6 | C7.99 | 2005/05/16 | 19:36 | 19:47 | 19:54 | |
| 7 | C4.24 | 2005/05/15 | 20:38 | 20:46 | 20:56 | |
| 8 | C4.22 | 2005/05/16 | 03:33 | 03:36 | 03:44 | |
| 9 | C4.09 | 2005/05/17 | 05:47 | 05:53 | 05:55 | |
| 10 | C3.1 | 2005/05/16 | 23:46 | 00:03 | 00:29 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/21 | M1.3 |
| Last geomagnetic storm | 2025/12/22 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 114.3 +22.5 |
| Last 30 days | 110.4 +23.9 |