Quite right. My local test copy of the sample data was based on the original OP (which had the tabs squashed to spaces), and I forgot to update my split pattern when posting. Corrected now, thanks.

In reply to Re^3: Best way to read in an XbyX table into a Hash{Key}{Key2}[value] structure by rjt
in thread Best way to read in an XbyX table into a Hash{Key}{Key2}[value] structure by ZWcarp

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