According to the drawings at the Solar Influences Data Analysis Center SIDC, September 16, 2011 had a sunspot number of 194. That's 74 spots and 12 groups. Looks good in the magnetic field from HMI as well. Still on track for a below average sunspot number for Solar Cycle 24, but we are seeing some good activity now. 
Friday, September 16, 2011
The Sunspot Number is 194!
According to the drawings at the Solar Influences Data Analysis Center SIDC, September 16, 2011 had a sunspot number of 194. That's 74 spots and 12 groups. Looks good in the magnetic field from HMI as well. Still on track for a below average sunspot number for Solar Cycle 24, but we are seeing some good activity now. 