Hi,
I don´t think it makes sense to perform any calculation on unspecified sample values.
Some do voltage readings with 100Msample/s on a clean DC reference voltage.
Some do 15 minute average readings on 3 phase AC power grid voltage.
Completely different data without
I could upload data of 20ms RMS mains AC voltage readings.
You will see a lot of fluctuations. It will change with the outlet I use, it will change with daytime, it will change with weekday, it will change with sun activity...
Imagine I give you two files, but both have very different fluctuations, what do you gain with any statistical calculatins, when you don´t know where the fluctuations come from?
It just produces meaningless values.
How do you decide whether the fluctuation is just a measurement error, or the fluctuation is real signal fluctuation?
To me it sounds like counting stones on a beach...
Klaus