IEVref:705-07-87ID:
Language:enStatus: Standard
Term: twelve-month running-mean sunspot number
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Symbol: R12
Definition: the mean value of the international relative sunspot number for the month n obtained by the following equation:

R 12 = 1 12 R n6 + R n+6 2 + k R k MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaeaaciWaamGadaGadeaabaGaaqaaaOqaaiaadkfadaWgaaWcba GaaGymaiaaikdaaeqaaOGaeyypa0ZaaSaaaeaacaaIXaaabaGaaGym aiaaikdaaaWaamWaaeaadaWcaaqaaiaadkfadaWgaaWcbaGaamOBai abgkHiTiaaiAdaaeqaaOGaey4kaSIaamOuamaaBaaaleaacaWGUbGa ey4kaSIaaGOnaaqabaaakeaacaaIYaaaaiabgUcaRmaaqafabaGaam OuamaaBaaaleaacaWGRbaabeaaaeaacaWGRbaabeqdcqGHris5aaGc caGLBbGaayzxaaaaaa@4BF0@

for k = n − 5, n − 4, ..., n, ..., n + 5

where Rk is the mean international relative sunspot number for the kth month


Publication date:1995-09
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Internal notes:2017-06-02: Cleanup - Remove Attached Image 705-07-87.gif

2017-08-30: Attempt to correct the nesting of the maths tags (unclosed <mrow> leading to problems). LMO
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