Sunspot numbers and solar flux rose this week. There were two new
sunspot groups on June 15, another on June 17 and one more on June
18, three more on June 19, two more on June 20 and another on June
21.
Average daily sunspot number increased from 122 to 143, and average
daily solar flux rose from 154.8 to 165.4.
Average daily planetary A index jumped from 5.7 to 15.4, while the
middle latitude number...
