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Sunspots and active regions — July 24, 1999

July 24, 1999

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Sunspots and active regions

The following active regions with sunspot groups were visible on the Sun on July 24, 1999. 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)
№ 8644 S24 E70 01 0030 ALPHA Jul 30, 1999 Aug 6, 1999 Aug 20, 1999
№ 8643 N20 W72 04 0010 BETA Jul 19, 1999 Jul 26, 1999 Aug 9, 1999
№ 8642 S18 E40 05 0060 BETA Jul 28, 1999 Aug 4, 1999 Aug 17, 1999
№ 8640 N17 E39 01 0110 ALPHA Jul 28, 1999 Aug 4, 1999 Aug 17, 1999
№ 8639 N38 W60 13 0390 BETA Jul 20, 1999 Jul 27, 1999 Aug 11, 1999
№ 8636 N21 E02 61 0600 BETA-GAMMA Jul 25, 1999 Aug 1, 1999 Aug 15, 1999
№ 8631 N14 W78 03 0010 BETA Jul 19, 1999 Jul 26, 1999 Aug 8, 1999

Solar cycle progression

The average monthly sunspot number (SSN) from January 1970 to July 1999. The gray background is the average SSN index.