Solar cycles 1-20

• Cycle 1
• Cycle 2
• Cycle 3
• Cycle 4
• Cycle 5
• Cycle 6
• Cycle 7
• Cycle 8
• Cycle 9
• Cycle 10
• Cycle 11
• Cycle 12
• Cycle 13
• Cycle 14
• Cycle 15
• Cycle 16
• Cycle 17
• Cycle 18
• Cycle 19
• Cycle 20

Copyright notice: The graphics can be freely used provided that proper credit is given. The graphs have been prepared by Jan Alvestad based on data from SIDC, Brussels.

Solar Terrestrial Activity Report