Comparative Readings?

I am curious to get some comparative readings from other users that have a RBOOM.
I live in between a massive substation and a large hydro dam. I have been curious if they emit infrasound.

This is with Swarm 3.0.1 with default settings on Spectrogram view taken outside on my front deck.

Thanks!

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I went an hour out of town towards the mountain where the trees get pretty thick and took a reading. It was pretty quiet aside from an occasional passing car.

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I set up the RBOOM this evening to point in the direction of the 1800 MW hydro dam 1 mile away. This was the reading.

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