Abstract: A set of proof correlation processes for identifying the two equal-length ranges (corresponding to time periods) contained within two discrete time data series (one range per series) that exhibit the highest correlation score when evaluated by a method that mimic how humans visually assess and score correlation is disclosed. The set of proof correlation processes include scoring the strength of correlation exhibited by ranges of data values corresponding to time periods and within two discrete time data series, and determining the number of time intervals that the variable series must be shifted (either forward or backward in time) with respect to the static series to exhibit the maximum correlation score for the given range pairs.