Solar activity was up for this reporting week, April 6-12.
Seven new sunspot groups appeared, one on April 6, another on April
9, two more on April 10, another on April 11, and two more on April
12. Then on Thursday, April 13, three new sunspot groups emerged.
The sunspot number rose to 154, the highest value in the past month.
Average daily sunspot number rose from 53.4 to 70.6, and average
daily so...
