Sunspots and active regions — March 21, 2004
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 578 | N15 | E47 | 16 | 0160 | Beta | Mar 26, 2004 | Apr 1, 2004 | Apr 15, 2004 |
| № 577 | S01 | E39 | 01 | 0070 | Alpha | Mar 25, 2004 | Apr 1, 2004 | Apr 14, 2004 |
| № 576 | S07 | W78 | 03 | 0030 | Beta | Mar 16, 2004 | Mar 23, 2004 | Apr 5, 2004 |
| № 574 | S04 | E14 | 22 | 0120 | Beta-Gamma | Mar 23, 2004 | Mar 30, 2004 | Apr 12, 2004 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1975, January to 2004, March. Gray background - average solar cycle.
