Sunspot region AR8307
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1998/08/20 | 7 | 330 | DHO | N32E72 | |
| 1998/08/21 | 8 | 440 | EKO | N32E59 | |
| 1998/08/22 | 11 | 510 | EKO | N31E47 | |
| 1998/08/23 | 12 | 570 | DKO | N31E34 | |
| 1998/08/24 | 12 | 450 | DKO | N31E21 | |
| 1998/08/25 | 17 | 370 | DKO | N31E09 | |
| 1998/08/26 | 18 | 380 | DKO | N30W01 | |
| 1998/08/27 | 14 | 320 | DKO | N31W15 | |
| 1998/08/28 | 12 | 180 | DAO | N31W26 | |
| 1998/08/29 | 13 | 160 | DSO | N32W39 | |
| 1998/08/30 | 9 | 140 | DSO | N32W52 | |
| 1998/08/31 | 3 | 140 | DSO | N30W65 | |
| 1998/09/01 | 4 | 90 | DSO | N32W77 | |
| 1998/09/02 | 3 | 40 | DAO | N32W90 |
| B | C | M | X |
|---|---|---|---|
| 1 | 11 | 4 | 6 |
The top 10 solar flares from sunspot region 8307
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | X7.03 | 1998/08/18 | 22:10 | 22:19 | 22:28 | |
| 2 | X5.57 | 1998/08/19 | 21:35 | 21:45 | 21:50 | |
| 3 | X4.03 | 1998/08/18 | 08:14 | 08:24 | 08:32 | |
| 4 | X1.79 | 1998/08/17 | 21:10 | 21:20 | 21:30 | |
| 5 | X1.57 | 1998/08/24 | 21:50 | 22:12 | 22:35 | |
| 6 | X1.29 | 1998/08/22 | 23:57 | 00:09 | 00:16 | |
| 7 | M4.34 | 1998/08/19 | 14:04 | 14:26 | 14:44 | |
| 8 | M3.29 | 1998/08/19 | 12:22 | 12:42 | 12:51 | |
| 9 | M3.2 | 1998/08/23 | 09:23 | 09:34 | 09:47 | |
| 10 | M2.27 | 1998/08/31 | 15:29 | 15:39 | 15:47 |
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|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
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