| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1997/03/29 | 8 | 80 | CRO | S24E59 | |
| 1997/03/30 | 16 | 100 | DAO | S24E46 | |
| 1997/03/31 | 19 | 140 | ESO | S25E32 | |
| 1997/04/01 | 12 | 90 | DAO | S24E20 | |
| 1997/04/02 | 13 | 70 | CAO | S25E07 | |
| 1997/04/03 | 29 | 70 | EAI | S24W02 | |
| 1997/04/04 | 22 | 90 | EAO | S23W15 | |
| 1997/04/05 | 12 | 80 | DAO | S23W25 | |
| 1997/04/06 | 6 | 30 | CSO | S23W41 | |
| 1997/04/07 | 1 | 10 | AXX | S23W52 |
| B | C |
|---|---|
| 14 | 3 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C3.06 | 1997/04/02 | 00:28 | 00:40 | 00:43 | |
| 2 | C3 | 1997/04/01 | 07:52 | 07:59 | 08:04 | |
| 3 | C1.86 | 1997/04/02 | 05:24 | 05:32 | 05:37 | |
| 4 | B9.77 | 1997/04/02 | 09:20 | 09:28 | 09:33 | |
| 5 | B9.44 | 1997/04/01 | 14:45 | 14:51 | 14:54 | |
| 6 | B7.64 | 1997/03/27 | 19:23 | 19:37 | 19:42 | |
| 7 | B6 | 1997/03/27 | 21:39 | 21:50 | 21:52 | |
| 8 | B5.03 | 1997/04/02 | 07:01 | 07:08 | 07:19 | |
| 9 | B5.01 | 1997/04/02 | 08:22 | 08:35 | 08:42 | |
| 10 | B5.01 | 1997/04/02 | 08:22 | 08:35 | 08:42 |
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/12 | M1.1 |
| Last geomagnetic storm | 2025/12/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
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