FIGURE 1—

Estimated Number of Dispatch Calls per Unit Temperature (°F) During the Warm Season for (a) Boston Police Department, (b) Boston Emergency Medical Services, and (c) Boston Fire Department: Boston, MA, 2010–2014

Note. Warm season is defined as May through September. Data are after adjustment for binary indicator of hot day (maximum temperature ≥ 90°F), long-term trends, day of week, ozone, PM_2.5 (particulate matter ≤ 2.5 microns), and population, as estimated in the time series analyses. Ninety-five-percent confidence intervals are shaded in gray, and the mean number of dispatch calls for each agency per day is shown by a dashed line. Box plots display the distribution of observed dispatches per 5°F increments for each agency.