. 2011 Mar 30;10:22. doi: 10.1186/1476-072X-10-22
Copyright ©2011 Haas et al; licensee BioMed Central Ltd.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 8.
Histogram of 911 Alarm Areas (n = 85).