Ok, I have a another question now that I've played around with this library a little.
Looking at that chart that is shown in the serial monitor for what the maximum resolution is for a given frequency, it doesn't seem to be a steady correlation where resolution decreases as frequency increases. From 1Hz to 131Hz it actually appears that the maximum resolution increases. It peaks at 131Hz, and then goes down from there. Is that accurate? I don't understand why the maximum resolution goes up to a point and then starts going back down. Is 131Hz really the frequency to use to achieve the highest resolution?