I understand the definition of decibel as a logarithmic unit for intensity of anything. I just cannot imagine its "actual size" when comes to the wireless connection.
Can you provide something illustrative which would help me to really understand how much it is if my internet provider says
"We have increased your WiFi connection by 2 decibels"?
Is it a significant improvement, or is it just a trifle?
Something like some kind of a table of values (in decibels) saying that the WiFi connection is poor/fair/good/excellent withing these intervals, or anything else practical.
I mean the question like a request for explanation of the practical perception of a particular physical unit. Like if I asked "How do we perceive increasing light wavelength by 100 nm, is it a completely different color or is it almost the same?"
Some asked in comments what exactly they did. It is a small square-like antenna. They physically came to my house and turned the antenna several degrees north :) to better aim their access point transmitter. And I live in a rural area.