• Home
  • Data
    • Schwabe-Wolf transition SN
    • Sunspot Number
    • Sunspot Number
    • Version archive
    • SSN Graphics
      • Daily SSN plot
      • Monthly SSN plot
      • Yearly SSN plot
      • Monthly Hemispheric plot
    • Sunspot Bulletin
    • Extended hemispheric sunspot numbers
    • Group Number
    • Group Number
  • FAQ & News
    • SSN FAQ
    • Archive
    • SSN FAQ
  • Observers
    • Enter your observations
  • Contact
  • Subscribe
  • About
  • Legal notices
  • Home
  • Data
    • Sunspot Number
    • Group Number
    • Past versions
    • Extended hemispheric number
    • Raw data - Carrington
    • Schwabe-Wolf transition SN
  • Products
    • Graphics
    • Cycle forecasts
    • Cycles min/max
    • Sunspot Bulletin
    • Subscribe
  • Analyses
    • Cycle durations
    • Spotless days
  • FAQ & NEWS
    • SSN FAQ
    • News-Archive
  • Observers
    • Enter your observations
  • Contact
Menu

Sunspot Number graphics

Sunspot Number

Daily, monthly and 13-month smoothed sunspot numbers for the past 13 years, and 12-month ahead predictions.
Yearly mean and 13-month smoothed monthly sunspot number since 1700.
Monthly and 13-month smoothed sunspot numbers over the last 6 cycles.
North and South hemispheric sunspot numbers (13-month smoothed values) over the last 6 cycles.

12-month ahead predictions of the monthly smoothed Sunspot Number

Standard Curves method (SC)
Combined method (CM)
McNish&Lincoln method (ML)

Kalman-filter optimization of the 12-month ahead predictions

Standard Curves method (SC)
Combined method (CM)
McNish&Lincoln method (ML)
Sunspot Index and Long-term Solar Observations

Menu

  • Home
  • Data
  • Products
    • Graphics
    • Cycle forecasts
    • Cycles Min/Max
    • Sunspot Bulletin
    • Subscribe
  • Analyses
  • FAQ & News
  • Observers
  • Contact
  • Legal notices
  • About

Search form

Data policy

SILSO images and data can be freely downloaded as public data. However, any public use, web based or paper publication of those data must include an explicit credit to the source: (SILSO data/image, Royal Observatory of Belgium, Brussels)

Legal notices