Seasonal factors

...The so-called economic fluctuations are a typical example. Seasonal fluctuation component (S) -- Fluctuations that are repeated almost regularly every year along with the seasons. Irregular fluctuation component (I) -- Irregular fluctuations that are the original series (O) minus the above T, C, and S components. ...

*Some of the terminology that refers to "seasonal fluctuation factors" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…　　いわゆる景気変動がその代表例。　季節変動要素(S)――季節seasonとと　　もに毎年ほぼ規則的に反復される変　　動。　不規則変動要素(I)――原系列(O)か　　ら以上のT,C,Sの成分を除いた　　不規則な変動。…

※「季節変動要素」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報