search for: new_column_in_dataframe

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2010 Jul 01
2
calculation on series with different time-steps
Hello, I have two series, one with stream stage measurements every 5 minutes, and the other with barometric pressure measurements every hour. I want to subtract each barometric pressure measurement from the 12 stage measurements closest in time to it (6 stage measurements on either side of the hour). I want to do something like the following, but I don't know the syntax. "If the