AirMagnet Survey Pro

AirMagnet survey pro is a tool used to perform a heat map of the signal within the facility. All signals must be ‐65dBm/25 dB SNR or better.

It is an accurate wireless site survey software solution for mapping, planning and designing 802.11n/a/b/g/ac wireless LANs for optimal performance, security, and compliance. It identifies the areas of low coverage that may cause connectivity and transmission issues. The tool captures issues caused in both 2.4 GHz and 5 GHz spectrum.

The parameters depicted as a visual are:
The following screenshot is an example of a heatmap: