Short Circuit Bus Contribution

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I have successfully written a script that uses psspy.arrbox to run short circuit studies and save the results. See here and here for reference. However, I have not found a way to get the fault contribution from the adjacent buses. I have also read through the help(arrbox.ascc) docstring with no luck. It seems to store the positive, negative, and zero sequence current for each phase, but only the total current.

Is there a way to get fault current contributions from adjacent buses using arrbox? I can parse through the report, but I would prefer to use an easier approach.