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Joel Grus@joelgrusChief Scientist, VoloMetrix

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Secret: E31 is our favorite fire truck!

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“Seattle Real-Time 911”

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Scraped 9 years of data (2004-2012)

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Truck Types• Engines• Medic and Aid• Ladder trucks• Battalion Chiefs• (Others)

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Secret: Fire trucks hang out with the downtroddenCheck-ins Location4,580 King Co Jail3,780 Union Gospel Mission3,499 DESC Shelter2,723 DESC Morrison2,697 Frye Apartments2,597 Noel House2,367 SHA Jefferson Terrace2,313 Four Freedoms House2,172 Mt St Vincent Retirement2,099 Harbor House

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Secret: More than 75% ofincidents are medical not firesType # of IncidentsAid Response 341kMedic Response 159kAuto Fire Alarm 47kMotor Vehicle Accident 23kAid Response Yellow 15kAuto Fire Alarm Resd 13kMedic Response 7 Per Rule 10k… …

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Secret: Fire Trucks Like the Nightlife12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11AM PM PM

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Seasonality Secrets50%40%30%20%10% 0% 1/1 2/1 3/1 4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1-10%-20%-30%

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Secret: My geocoding worked!

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Not a secret: Seattle drivers are terrible“Auto Accident” check-ins “Assault” check-ins “Fire” check-ins

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Secret: 62% of check-ins are single truck

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Secret: Geography is Destiny

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Dates and Parties

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Date Secrets

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Party Secrets

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TruckRank

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Avg # Of Trucks at my Check-ins 12 10 8 6 A B E 4 L M 2 0 0.08 0.09 0.1 0.11 0.12 0.13 TruckRank

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Future Directions• Changes over time?• Why are there no “cat stuck in tree” incidents in the data?• Investigate other secrets: – Police cars – Garbage trucks – Stuffed hippos** My daughter suggested this one

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Thanks!• More info in blog post on joelgrus.com• Code is on github.com/joelgrus• Data is not posted but am glad to share if you ask nicely• Will be around for rest of Strata, so come say “hi”• Check out VoloMetrix, we do sort of similar stuff (for companies, not fire trucks)• Follow me on Twitter: @joelgrus