Stig Östlund

fredag, juni 24, 2011

Sunspot numbers

Over the past week (June 16-22) the average daily sunspot number
rose nearly 20 points to 55, and average daily solar flux readings
increased by nearly 9 points to 98.6. All geomagnetic indices
declined slightly. These increases or decreases are relative to the
previous seven days, before June 16. /ARRL

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