Using Netspot Pro, I mapped my house for my network. I am in quiet residential single family home neighborhood so 8 houses around me (3 behind, 1 each side, and 3 across street.
Once the mapping is finished, there is the ability to look at the 2.4 GHz and 5 GHz networks separately. There was also an ability to look at other networks that are in the neighbourhood that may provide interference.
150 networks? In a quiet neighborhood.
And I worry about the wire mesh in stucco in my exterior and interior wall… 
