Start date May 1823 Duration (years) 10.5 Max count month November 1829 | End date November 1833 Max count 71.5 Min count 7.3 | |
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Solar cycle 7 was the seventh solar cycle since 1755, when extensive recording of solar sunspot activity began. The solar cycle lasted 10.5 years, beginning in May 1823 and ending in November 1833 (thus overlapping the Dalton Minimum). The maximum smoothed sunspot number (monthly number of sunspots averaged over a twelve-month period) observed during the solar cycle was 71.5 (November 1829), and the minimum was 7.3.
References
Solar cycle 7 Wikipedia(Text) CC BY-SA