Indoor / Living room values

Hello all,

I started the sensor journey here to learn more about my indoors particle contamination. I would like to have some references to how much contamination to expect and what are typical good/bad values. The WHO global air guidelines are interesting, but I am interested in real life values in different rooms.

I’ll get started with my living room:

[1] WHO global air quality guidelines (AQG) - Update 2021