Active Region Maps

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Each 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.

Coordinates in the table are for 00:00 hours Universal Time. Spot regions are plotted on the map for 16:30 hours Universal Time, or 6:30 am Hawaii Standard Time. The Sun rotates about 9 degrees during that time interval.

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Last modified: Thu Jul 27 13:49:04 HST 2006

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.