Solar cycle 5
Solar cycle 5 was the fifth solar cycle since 1755, when recording of solar sunspot activity began. The solar cycle lasted 12.6 years, beginning in May 1798 and ending in December 1810. The maximum smoothed sunspot number (monthly number of sunspots averaged over a twelve-month period) observed during the solar cycle was 49.2, and the minimum was zero.
- Kane, R.P. (2002). "Some Implications Using the Group Sunspot Number Reconstruction". Solar Physics 205(2), 383-401.
- "The Sun: Did You Say the Sun Has Spots?". Space Today Online. Retrieved 12 August 2010.
- SIDC Monthly Smoothed Sunspot Number. ""
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