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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 18, 2013. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 1700 | S13 | E54 | 02 | 0010 | Beta | Mar 23, 2013 | Mar 30, 2013 | Apr 13, 2013 |
| № 1699 | S15 | W45 | 03 | 0030 | Beta | Mar 16, 2013 | Mar 22, 2013 | Apr 5, 2013 |
| № 1698 | S19 | W72 | 16 | 0200 | Beta | Mar 14, 2013 | Mar 20, 2013 | Apr 3, 2013 |
| № 1697 | N15 | W63 | 02 | 0010 | Beta | Mar 14, 2013 | Mar 21, 2013 | Apr 4, 2013 |
| № 1696 | N05 | W49 | 16 | 0190 | Beta-Gamma | Mar 15, 2013 | Mar 22, 2013 | Apr 5, 2013 |
| № 1695 | N10 | W09 | 03 | 0180 | Beta | Mar 18, 2013 | Mar 25, 2013 | Apr 8, 2013 |
| № 1692 | N09 | W29 | 02 | 0240 | Beta | Mar 17, 2013 | Mar 24, 2013 | Apr 6, 2013 |
| № 1691 | N12 | W78 | 02 | 0120 | Beta | Mar 13, 2013 | Mar 20, 2013 | Apr 3, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to March 2013. The gray background is the average SSN index.
