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 Description  | 
 
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 Formula  | 
 TamSigoM(series,Periods=25,PrevBar=12)=begin yom = 100 * (($1.close - savg($1, Periods)[PrevBar]) / (savg($1, Periods)[PrevBar])) avyom = Sum(yom, 50) / 50 varyom = Sum(yom * yom, 50) / 50 - avyom * avyom som = sqrt(varyom)[PrevBar] sigom = savg(som, Periods) 
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 Parameters  | 
 SERIES 
 Periods 
 PrevBar 
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 Return Value  | 
 
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