Active Region Map for Today
Each AR map is a 17 kbyte image. Celestial north is at the top; east is at the left.
Today's Active Region Map
Yesterday's Map
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Today's AR Maps
20130617.1632_armapEach map is drawn from tabular information in the Solar Region Report sent by the Space Environment Center. The table is printed on the map and looks like:
| NMBR | LOCATION | LO | AREA | McI | LL | NN | MAG | TYPE |
| 8045 | N02W85 | 007 | 0020 | CRO | 06 | 04 | BETA | |
| 8046 | S26E14 | 268 | 0010 | BXO | 08 | 05 | BETA | |
| 8047 | N26E68 | 214 | 0010 | BXO | 07 | 04 | BETA |
The translation into English is:
| NMBR | NOAA active region number. |
| LOCATION | Location on the visible disk. |
| LO | Longitude in the Carrington system. |
| AREA | Area of spots in millionths of the visible hemisphere |
| McI | Spot configuration in the McIntosh system. |
| LL | Length of spot group in degrees. |
| NN | Number of spots. |
| MAG TYPE | Magnetic configuration of the spots in the Mt. Wilson system . |
| ALPHA = spots of only one magnetic polarity. | |
| BETA = spots of both polarities, separated. | |
| GAMMA = spots of both polarities, intermingled. | |
| DELTA = spots of both polarities in a single penumbra. |