So below are the APs my computer “saw”, along with their channels. To my knowledge, all SSIDs of similar naming (e.g. North Fbg. A and D) are on the same tower, just on different radios/antennas. Also, to my knowledge my provider only uses 20 MHz channels to deploy its service, rather than economizing on spectrum by using smaller bandwidths. So if they’re broadcasting on channel 1 (this is all 2.4 GHz stuff) then channels 1-4 are all at least partially occupied. See this diagram for more details.

SSID – Channel
Hayden Ranch – 9
Hospital A – 9
Hospital B – 7
Grapetown – 11
Grapetown B – 2
Morris Ranch – 3
Morris Ranch B – 7
North Fbg. A – 7
North Fbg. B – 1
North Fbg. C – 11
North Fbg. D – 4

Note that on the North Fbg. tower all frequencies are used in the 2.4 GHz band. Not the best use of spectrum, I’d say…