The noise floor is constantly -92 and noise % is ‘8%’. I assume this means that my wireless card does not report noise data? I’ve been in incredibly ‘noisy’ situations where I’m sure that the noise floor was not -92, but was not able to verify.
Is this question related to NetSpot’s Discover Mode? What made you think that there should be much noise on this floor? We suspect that -92 is the lowest signal your MacBook’s AirPort adapter can detect, and in fact there’s not much noise in the area you are measuring.