Looking for someone to suggest the easiest way to get to frequency domain outputs of the HF band measured in 'Hz' rather than 'sec^2/Hz' (or - how to convert? - simple 'Hz' seems to be the more common way to report HF power in the literature).

Also, looking for a get around for the fact that time domain outputs (like RMSSD) seem to require a scripting license in AquKnowledge. Is there free software that can do the same? - or, perhaps better, free software that will give both time and frequency domain outputs in one quick analysis? 

Failing that - suggestions for better analysis methods appreciated!

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