Stig Östlund

lördag, juni 18, 2011

The average daily sunspot number past week

The average daily sunspot number for the past week declined by more than half, nearly 52 points to 35.1, when compared to the previous week. Average daily solar flux declined nearly 12 points to 90.1. Note that from Wednesday (the last day for the data reported at the end of this bulletin) to Thursday of this week the solar flux went from 101.5 to 103.3 and the sunspot number rose from 48 to 62.
ARRL


ARRL (The American Radio Relay League) is the largest membership association of amateur radio enthusiasts in the USA. ARRL is a non-profit organization, and was founded in May 1914 by Hiram Percy Maxim of Hartford, Connecticut. The ARRL represents the interests of amateur radio operators before federal regulatory bodies, provides technical advice and assistance to amateur radio enthusiasts, supports a number of educational programs and sponsors emergency communications service throughout the country. The ARRL has approximately 154,000 members. In addition to members in the US, the organization claims over 7,000 members in other countries. The ARRL publishes many books and a monthly membership journal called QST.

Bloggarkiv