It's not clear what you mean by "two sets of values". Since you have "all the other parts figured out", you should show us (an example of) the actual data structure that stores the "two sets of values". (That is, are you using an array of arrays, or a hash, or something else?) Without knowing that, we'd have to guess how the data is stored in your script, and we're likely to be wrong.
Perhaps you could post a reply with that information.
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