111 / 260
90
ANALYSIS OF BUSIEST HOURS
There is significant variability in the number of calls from hour to hour. One special concern
relates to the resources available for hours with the heaviest workload. We tabulated the data
for each of the 8,760 hours in the year. Table 8-11 shows the number of hours in the year where
there were from zero to five calls during the hour. Table 8-12 shows the 10 one-hour intervals
during the year with the most calls.
TABLE 8-11: Frequency Distribution of the Number of Calls
Calls in an Hour Frequency Percentage
0
4,832
55.2
1
2,674
30.5
2
926
10.6
3
262
3.0
4
58
0.7
5
8
0.1
TABLE 8-12: Top 10 Hours with the Most Calls Received
Hour
Number
of Calls
Number
of Runs
Total
Deployed Hours
05/20/2015 – 5:00 p.m. to 6:00 p.m.
5
13
5.7
08/27/2015 – Noon to 1:00 p.m.
5
11
13.1
11/18/2015 – 3:00 p.m. to 4:00 p.m.
5
8
2.2
12/21/2015 – 5:00 p.m. to 6:00 p.m.
5
7
4.3
04/16/2015 – 4:00 p.m. to 5:00 p.m.
5
6
2.8
08/05/2015 – 11:00 a.m. to Noon
5
6
2.1
11/13/2015 – 2:00 p.m. to 3:00 p.m.
5
5
2.3
02/13/2015 – 5:00 p.m. to 6:00 p.m.
5
4
1.2
05/29/2015 – 11:00 a.m. to Noon
4
21
13.9
08/13/2015 – 3:00 p.m. to 4:00 p.m.
4
17
24.1
Note:
Total deployed hours is the total time spent responding to calls received in the hour, and which may
extend into the next hour or hours. Number of runs and deployed hours only includes dispatches of MHFD
and SSCCFD units.
Observations:
■
During 66 hours (1 percent of all hours), four or more calls occurred; in other words, the
departments responded to four or more calls in an hour roughly once every six days.
■
The highest number of calls to occur in an hour was five, which happened eight times.
■
One of the hours with the most calls and the most individual dispatches was noon to
1:00 p.m. on Aug 27, 2015. The hour's five calls involved 11 individual dispatches resulting in
13.1 hours of deployed time. These five calls included one cancelled call, one EMS call, one
good intent call, one hazard call, and one outside fire call.