Unfortunately, there is no reliable way to know beforehand if an antenna is going to work at your location. The only way to know for sure is to try it for yourself (we have a money back guarantee).
The reason why is there are numerous undetermined factors that can affect your ability to receive TV signals. For example, let's say there are 50 stations in your city BUT you live next to a LTE Tower, that alone can cause you to lose out on a lot of channels because LTE signals interfere with TV signals.