Viewing archive of Wednesday, 21 April 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 |
|---|---|---|---|---|
| 79 | 0 | B2.86 | C2.46 | 5 |
Sunspot regions
Region 8516 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -2 | 40 -30 | CSO | S19W11 | |
Region 8517 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -2 | 100 30 | DSO | N22W77 | |
Solar flares on this day | ||||
| B8.36 B5.23 B6.76 | ||||
Region 8518 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 16 5 | 160 60 | DAO | S15E29 | |
Region 8520 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 1 | 10 -10 | BXO | N19E00 | |
Region 8521 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -2 | 0 | AXX | N32W19 | |
Solar flares on this day | ||||
| B8.3 | ||||
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