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• An average of 13 monthly RI numbers, centered on the month of concern.

  NOAA National Weather Service - Cite This Source - This Definition
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  Cite Definition for Smoothed Sunspot Number

  American Psychological Association (APA)

  Smoothed Sunspot Number. (n.d.). National Weather Service Glossary. Retrieved March 21, 2023, from website: http://www.expertglossary.com/definition/smoothed-sunspot-number.

  Chicago Manual of Style (CMS)

  Smoothed Sunspot Number. www.weather.gov. National Weather Service Glossary. NOAA National Weather Service. http://www.expertglossary.com/definition/smoothed-sunspot-number (accessed: March 21, 2023).

  Modern Language Association (MLA)

  "Smoothed Sunspot Number." National Weather Service Glossary. NOAA National Weather Service. 21 March. 2023 http://www.expertglossary.com/definition/smoothed-sunspot-number.

• Browse Related Terms: A Index, AVG, Climate, Composite, Maximum Sustained Surface Wind, mean, Mean Annual Temperature, Meteorology, Rogue Wave, Significant wave height, Smoothed Sunspot Number, Sustained Wind