Seven sunspot groups emerged this week. The first was on September
19, three on September 20, one each on September 22 and 23, and the
last on September 25.
Average daily sunspot numbers increased from 120 to 137.2, and
average daily solar flux shifted from 175.7 to 164.3.
Geomagnetic numbers were much quieter. Average daily planetary A
index changed from 35.7 to 14.3, and middle latitude A index fro...
