My own idea is to divide the amount of hum sufferers with the amount of population of the place, and THEN make a heatmap... Maybe you need to cull places where

My own idea is to divide the amount of hum sufferers with the amount of population of the place, and THEN make a heatmap... Maybe you need to cull places where there are too few people and 1 hum sufferer might already cause lots of heat, but I expect the result would be a proper amount of hum sufferers compared to total population of the place, maybe this way you can trace sources of those hums. Also I bet lots of people don't talk about this publicy, because people say they are crazy or the sound is inside their head, I mentioned a high-frequency buzzing sound I hear on my apartment, and people already threw lots of disparaging and senseless remarks to me (even with me being very explicit that the sound comes from outside, because I cannot hear it when I close my windows or go to window-less rooms)