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What will be the maximum, smoothed monthly international sunspot number for Solar Cycle 24?




Sunspot Number



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Question ends

June 01, 2016 @ 12:00pm PDT



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Most by: wstritt (7 predictions)


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benthinkin (ADMIN)   •   Tue Jan 05 2016 at 10:15am PST

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bane1969   •   Sat Jun 22 2013 at 10:41pm PDT

solar cycles from what i gather last between 9 and 14 years so this one will probably end between 2017 and 2022, but the question ends on jun 1 of 2014 . is the question going to pay out based on the average in 2014 or is it going to have to wait years to pay out?

vercingetorix   •   Mon Sep 17 2007 at 10:25am PDT

Sorry, should have capitalized International Sunspot Number to indicate the source will be the SIDC in Brussels. The smoothed value of Ri is what we’re shooting for. For example, the maximum for Solar Cycle 23 was 120.8 in April, 2000.

historical trend

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Sunspot Number