How to read frequency/time graphs on BEQCatalogue?

[TaroTaro]

I was wondering if someone could help me understand these graphs? I've been looking around for a source where it would show what subwoofer frequencies are being played during certain parts of a movie.

Looking at this Spider-Man movie, I'm not sure how to read the first graph, or why it seems to be broken into two halves.

It seems to be showing the first 5minutes have frequencies down to 10?

Here is a link to what I'm looking at: https://beqcatalogue.readthedocs.io/en/latest/aron7awol/57686214/

 

[TaroTaro]

Or does anyone know the name of this type of graph? That way I could look it up myself

 

[BoredSysAdmin]

a spectrogram