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3. Avril 2012, 22:48:44

happyjuggler0

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Sujet: Re: Daylight saving time

El Cid: It is worth pointing out that in the study I referred to, that before Indiana changed the rules, a few counties in Indiana didn't have DST while others did. Therefore when they changed the rules they could measure the changed energy output in the affected counties while also having a control group.

It is the control group which is the key that makes it convincing.