In my opinion, archive the data that was actually gathered and the code's intermediate & final outputs. Write the code clearly enough that what it did can be u

In my opinion, archive the data that was actually gathered and the code's intermediate & final outputs. Write the code clearly enough that what it did can be understood by reading it alone, since with pervasive software churn it won't be runnable as-is forever. As a bonus, this approach works even when some steps are manual processes.