The monthly mean sunspot number (blue) and 13-month smoothed monthly sunspot number (red) for the last five cycles.
Daily sunspot number (yellow), monthly mean sunspot number (blue), smoothed monthly sunspot number (red) for the last 13 years and 12-month ahead predictions of the monthly smoothed sunspot number: SC (red dots) : prediction method based on an interpolation of Waldmeier’s standard curves; It is only based on the sunspot number series. CM (red dashes) : method (from K. Denkmayr and P. Cugnon) combining a regression technique applied to the sunspot number series with the aa geomagnetic index used as a precursor (improved predictions during the minimum phase between solar cycles).
The North and South components of the monthly smoothed sunspot number for the last five cycles (13-month smoothed monthly values). Green fill color when the North number is higher than the South number, and red color when South is higher than North.