Active areas
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) | |
|---|---|---|---|---|---|---|---|---|
| № 328 | S03 | E15 | 01 | 0000 | alpha | Apr 2, 2003 | Apr 9, 2003 | Apr 22, 2003 |
| № 327 | S07 | W11 | 04 | 0020 | beta | Mar 31, 2003 | Apr 7, 2003 | Apr 20, 2003 |
| № 326 | S13 | E33 | 01 | 0040 | alpha | Apr 3, 2003 | Apr 10, 2003 | Apr 24, 2003 |
| № 325 | N12 | E27 | 09 | 0330 | beta | Apr 3, 2003 | Apr 10, 2003 | Apr 23, 2003 |
| № 324 | S12 | E07 | 09 | 0020 | beta | Apr 1, 2003 | Apr 8, 2003 | Apr 22, 2003 |
| № 323 | S08 | W28 | 21 | 0310 | beta-gamma | Mar 30, 2003 | Apr 6, 2003 | Apr 19, 2003 |
| № 321 | N06 | W15 | 17 | 0140 | beta-gamma | Mar 31, 2003 | Apr 7, 2003 | Apr 20, 2003 |
| № 319 | N13 | W56 | 05 | 0130 | beta | Mar 28, 2003 | Apr 3, 2003 | Apr 17, 2003 |
| № 318 | S13 | W48 | 08 | 0050 | beta | Mar 28, 2003 | Apr 4, 2003 | Apr 18, 2003 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1974, January to 2003, April. Gray background - average solar cycle.
