[Waverley ARS] Conditions

Colin Marks cmarks at pacific.net.au
Sun Dec 21 06:11:05 UTC 2008


This is the latest solar report from ARRL members newsletter.
I've always said this is the worst minimum I have experienced in 30 years....
73     Colin     VK2LV


==>SOLAR UPDATE 

Tad "We twa hae paidl'd in the burn frae morning sun till dine" Cook,
K7RA, this week reports: Last week's sunspot group was only visible for
three days, December 10-12. The average daily sunspot number for all of
2007 was 12.8; if we see no sunspots for the rest of 2008, the average
for this year will be 4.7. By comparison, the yearly averages of daily
sunspot numbers during the last solar minimum (1995-1997) were 28.7,
13.2 and 30.7. This solar minimum is much lower than the one about 12
years ago. Sunspot numbers for December 11-17 were 12, 14, 0, 0, 0, 0
and 0 with a mean of 3.7. The 10.7 cm flux was 70.2, 71, 69.7, 68.8,
68.9, 69.4 and 68.8 with a mean of 69.5. The estimated planetary A
indices were 3, 2, 1, 0, 1, 4 and 5 with a mean of 2.3. The estimated
mid-latitude A indices were 4, 2, 1, 1, 1, 4 and 3 with a mean of 2.3.
For more information concerning radio propagation, visit the ARRL
Technical Information Service Propagation page
<http://www.arrl.org/tis/info/propagation.html>. To read this week's
Solar Report in its entirety, check out the W1AW Propagation Bulletin
page <http://www.arrl.org/w1aw/prop/>. This week's "Tad Cookism" brought
to you by Robert Burns' "Auld Lang Syne"
<http://www.rabbie-burns.com/the_poems/auldlangsyne.cfm.html>. 

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