Active areas
Sunspots and active regions
| Group number | Sunspots Location on the Sun | The number of spots in the group | The classification by the Zurich's modified system | Area (millions of shares of the solar hemisphere) | Group length (in degrees) | Carrington Longitude (in degrees) | Group's magnet type |
|---|---|---|---|---|---|---|---|
| № 2818 | S17 E39 | 01 | hsx | 0050 | 01 | 204 | alpha |
| № 2817 | N18 W88 | 05 | cso | 0140 | 09 | 331 | beta |
| № 2816 | S24 W18 | 06 | cro | 0050 | 10 | 261 | beta |
H-alpha plages without spots
No H-alpha plages without spots can be currently observed on the Sun's surface
Solar cycle progression
Average monthly sunspot number (SSN) from 1992, January to 2021, April. Gray background - average solar cycle.
