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) | |
|---|---|---|---|---|---|---|---|---|
| № 2355 | S10 | E42 | 05 | 0030 | beta | May 28, 2015 | Jun 4, 2015 | Jun 17, 2015 |
| № 2354 | S21 | W29 | 01 | 0000 | alpha | May 23, 2015 | May 30, 2015 | Jun 12, 2015 |
| № 2353 | N07 | W30 | 09 | 0060 | beta | May 23, 2015 | May 29, 2015 | Jun 12, 2015 |
| № 2349 | S21 | W48 | 08 | 0060 | beta | May 21, 2015 | May 28, 2015 | Jun 11, 2015 |
| № 2348 | S12 | W71 | 01 | 0030 | alpha | May 20, 2015 | May 26, 2015 | Jun 9, 2015 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1986, January to 2015, May. Gray background - average solar cycle.
