Solar activity perked up this week, with average daily sunspot numbers rising from 65.6 in the previous seven days to 120.9 in the April 16-22 period.

Average daily solar flux increased from 132.5 to 150.4 over the same period.

The day with the most geomagnetic activity was April 16, when the mid-latitude A index was 28, planetary A index was 43, and the high latitude college A index in Alaska wa…