Interesting it might help contribute to the physics of lightning which was thought cascading from a cosmic ray given the right electrical potentials. I once worked a few magnetometer surveys, and they often require a second stationary recording to compare the background magnetic flux. So to get the results we would subtract the time coded reading from the other reading over which we had conducted the survey. It's usually small in nanoTeslas (parts of One, the combined magnetic value of the planet, also done in gammas a larger measure from magnetics) looking for anomalies in archaeology. Northern Lights Mystery Exposed By Scientists
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