It wasn't entirely clear visually if the overall trends differed after plotting the time series data. To dig further requires normalizing the Gowanus call data, and using stationarity tests to determine if Gowanus is stationary, or if it has a unit root. 

First, I made the Gowanus data a ratio. Instead of using the total number of noise complaints which increase over time, I looked at the percentage of noise complaints from Gownaus, compared to the rest of Brooklyn.