Sector Relative Strength

I was wondering if anybody knew where I could find historical Sector RS.

My current data provider only gives me 3 distinct choices; last week, 3 months ago, and 6 months ago.

Thanks either way.

 

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smartmoney.com;
free charts, for example SMH relative to DOW,Nasdaqqq or SPX...

 

go to prophet.net ...its all you need!!