crime seriousness figures based loosely on National Survey Of Crime Severity http://www.bjs.gov/index.cfm?ty=pbdetail&iid=3559
neighbourhood boundary data from http://www1.toronto.ca/wps/portal/contentonly?vgnextoid=04b489fe9c18b210VgnVCM1000003dd60f89RCRD&vgnextchannel=b227e03bb8d1e310VgnVCM10000071d60f89RCRD