Solar activity increased substantially over the past week, with
twelve new sunspot groups. One appeared on January 11, five more on
January 12, another on January 13, two more on January 15, and three
more on January 16.
Two more sunspot groups emerged on January 18.
Average daily sunspot number rose from 146.1 to 167.3, and solar
flux from 163.3 to 184.1.
Geomagnetic numbers remained low and practica...
