How do I get quarterly data?

Hi, I have realized that data available from IPUMS-CPS are monthly, do you know how to get quarterly data or to convert the monthly data into quarterly ones? Thanks very much for your answer

You can pool together 3 months of the basic monthly samples in order to create quarterly data. If you intend to calculate representative population statistics with this pooled sample you’ll need to adjust the sampling weight appropriately. Since you are pooling together 3 samples, you’ll want to divide the sampling weight by 3 (the number of samples you are pooling together).

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Thanks so much, your answer has been very helpful