By the Numbers: The Boston Marathon Bombings, One Month Later

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Jared Wickerham / Getty Images

People gather during a vigil for eight-year-old Martin Richard who was killed by an explosion near the finish line of the Boston Marathon, on April 16, 2013 at Garvey Park in Boston.

One month ago today two pressure cooker bombs exploded at the Boston Marathon, killing three spectators and wounding more than 260 people.  The lives and limbs lost are the most tragic illustration of the toll, but other numbers help tell the story of the continued effect of the terror attack.

12
Approximate number of seconds between the two explosions.

23,336
Number of runners who started the race on April 15. Competitors came from 92 countries and all 50 states, plus Washington D.C. and Puerto Rico; some 5,700 were unable to finish.

8
Age of Martin Richard, the youngest victim killed in the blasts. Other victims include Krystle Campbell, 29, and Lu Lingzi, 23; more than 260 were injured.

(PHOTOS: Obama Attends Vigil for Boston Marathon Bombing Victims)

10:30 p.m.
The approximate time Massachusetts Institute of Technology police officer Sean Collier, 27, was killed in a shootout with suspects Tamerlan and Dzhokhar Tsarnaev on April 18.

90
Number of minutes an unnamed man spent with the suspects after they carjacked his Mercedes-Benz S.U.V. Tamerlan reportedly said upon entering the car: “Did you hear about the Boston explosion? I did that,” and told the man to drive while pointing a gun at him. The police tracked the car after the victim managed to escape.

200
Approximate number of shots fired during a shootout between the two brothers and police in Watertown, Mass.; Tamerlan was later pronounced dead at a local hospital.

20 blocks
Radius of area cordoned off in Watertown on April 19 as police searched for Dzhokhar; residents of adjacent areas, including all of Boston and neighboring towns Allston-Brighton, Belmont, Brookline, Cambridge, Newton and Waltham, were asked to “shelter in place,” bringing the region to a virtual standstill.

250,000
People who tuned in to a Ustream rebroadcast of a Boston police scanner as word spread that the second suspect had been spotted.

(PHOTOS: A Photographer’s View of the Carnage: “When I Look at the Photos, I Cry”)

22 feet
Length of the Slip Away II, the boat Dzhokhar was discovered hiding in.

16 hours
Amount of time Dzhokhar answered questions before being read his Miranda rights informing him that he could remain silent and ask for a lawyer; he stopped talking once told.

40%
Increase in police presence at the London Marathon on April 21; the race began after a moment of silence for the Boston victims.

597%
Boost in sales for Neil Diamond’s “Sweet Caroline” in the week following the bombings. The song, which is played ritually at Fenway Park, sold 19,000 copies that week, up from 2,800 copies the week before. Diamond has said he will donate the proceeds to charity.

6
Number of months Tamerlan spent in Russia’s Dagestan region last year. Investigators are focusing on the trip for clues to the brother’s radicalization.

61%
The percentage of Americans who say they are concerned about the government enacting new anti-terrorism policies that restrict civil liberties in the wake of the Boston bombings, according to a TIME/CNN/ORC poll released May 1; only 32% of Americans believe the U.S. government can prevent all major attacks—down from an average of 40% in 2011—but 27% said they are less likely to attend large public events in the future because of fears of terror attacks.

$30,073,433
Total donations as of 9:30 p.m. on May 14 to the One Fund Boston, created to provide help for the families most affected by the bombings. At the fund’s founding Mass. Gov. Deval Patrick said: “At moments like this, we are one state, one city, and one people.”

MORE: Marathon Bombings: Our Favorite Tributes to Boston

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