Sunspot region AR8645
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/07/25 | 5 | 190 | DKO | S26E68 | |
| 1999/07/26 | 15 | 320 | FAO | S27E59 | |
| 1999/07/27 | 15 | 410 | FKO | S27E46 | |
| 1999/07/28 | 13 | 530 | FKO | S27E35 | |
| 1999/07/29 | 24 | 490 | FKO | S26E22 | |
| 1999/07/30 | 34 | 590 | FKI | S24E10 | |
| 1999/07/31 | 37 | 620 | FAO | S25W03 | |
| 1999/08/01 | 33 | 600 | FAO | S25W16 | |
| 1999/08/02 | 43 | 540 | FKI | S25W29 | |
| 1999/08/03 | 27 | 490 | FKI | S25W44 | |
| 1999/08/04 | 36 | 570 | FKI | S25W55 | |
| 1999/08/05 | 18 | 360 | FAO | S26W66 | |
| 1999/08/06 | 9 | 230 | DAO | S28W78 | |
| 1999/08/07 | 3 | 110 | HSX | S28W92 |
| C | M |
|---|---|
| 16 | 6 |
The top 10 solar flares from sunspot region 8645
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M2.71 | 1999/08/05 | 15:55 | 16:23 | 16:33 | |
| 2 | M2.69 | 1999/08/06 | 16:28 | 16:36 | 16:45 | |
| 3 | M1.97 | 1999/07/29 | 16:22 | 16:56 | 17:17 | |
| 4 | M1.53 | 1999/07/23 | 15:54 | 16:01 | 16:13 | |
| 5 | M1.46 | 1999/07/25 | 04:14 | 04:32 | 04:38 | |
| 6 | M1.11 | 1999/07/28 | 17:54 | 18:12 | 18:35 | |
| 7 | C9.07 | 1999/08/02 | 11:48 | 11:52 | 11:59 | |
| 8 | C7.53 | 1999/07/25 | 00:57 | 01:03 | 01:05 | |
| 9 | C6.76 | 1999/08/01 | 15:35 | 15:39 | 15:44 | |
| 10 | C6.06 | 1999/08/04 | 11:56 | 12:01 | 12:08 |
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|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
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