49ers Seahawks Football

Elaine Thompson/AP

Philip Robertson, center, an adjudicator with Guinness World Records, examines a device used to measure the sound level of cheering fans at CenturyLink Field in Seattle as William Stewart, left, and Matt Roe, both of SSA Acoustics, look on during an NFL football game between the Seattle Seahawks and the San Francisco 49ers, Sunday, Sept. 15, 2013, in Seattle. Fans at the notoriously loud stadium attempted to set a new Guinness World Record for crowd noise at an athletic event during the game. Guinness officials said that a new record was set.

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