The document summarizes stratification based on geographic location in Stockton, California. It identifies several high crime neighborhoods like Ponce De Leon, Bedlow Drive, and Kelley Drive. It provides statistics showing that Stockton has the second highest crime rate and 10th most violent crimes in the US. Crime levels increased from 2011-2012, with a 10% rise in firearm violence and 400% increase in firearm assaults on police. The document also notes high poverty and unemployment rates in Stockton and labels it as one of the most polluted cities in the nation.