Viewing archive of Sunday, 31 October 1999 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux | C | M |
|---|---|---|---|---|---|
| 194 -23 | 0 -1 | C1.16 | M1.09 | 8 | 1 |
Sunspot regions
Region 8739 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 22 -4 | 390 -110 | FAI | S10W64 | |
Region 8741 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 13 -9 | 150 -50 | EAO | S24W42 | |
Region 8742 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 34 1 | 370 -60 | EAO | N10W11 | |
Region 8743 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 10 2 | 90 50 | DSO | S14W47 | |
Region 8745 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 10 4 | 110 -20 | DAO | S15E15 | |
Region 8747 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 13 5 | 210 20 | EAO | N12E30 | |
Solar flares on this day | ||||
| C4.87 C2.41 | ||||
Region 8748 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 1 | 40 30 | DAO | N19W08 | |
Region 8749 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 3 | 10 10 | BXO | S21E31 | |
Solar flares on this day | ||||
| C3.23 C3.97 C2.04 M1.09 C3.39 C1.84 | ||||
Region 8750 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 2 | 10 -10 | BXO | S18W04 | |
Region 8751 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 30 | HSX | N20E66 | |
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| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
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