Response Times For Each Neighborhood in San Francisco from 2012 to 2019

For this visualization we measured the average amount of time it takes for the 911 Operator to dispatch an available unit and when this unit arrives at the location of the incident. We wanted to find any discrepancies or variation between the neighborhoods of San Francisco. Some neighborhoods have more incidents reported, farther distances from stations and hospitals, and etc to affect this amount of time.

Data Encoding

This graph measures the difference between the recorded Dispatch DtTm and On Scene DtTm in minutes. Each different colored segment represents the Call Group Type, either Alarm, Fire, Life Threatening, or Non Life Threatening, and each segment's length represents the average amount of time it takes for a unit to arrive the the scene after the 911 operator dispatches them for that specific type of call. For example, in 2019, if you called in the Tenderloin about a fire related incident, the unit would be on the scene in about five mintues.

Average Difference Between Dispatch and On Scene Time in Minutes

Select year: 2012 2013 2014 2015 2016 2017 2018 2019 Toggle sort

Interactivity

To help visualize the data, this graph is interactive. This graph is able to:

In Conclusion

After removing null values and negative data, I was able to nitice some patterns in the data.

Inspirations

Stacked bar chart
Stacked bar chart with tooltips