Shocker! Internet use now ties TV in time spent avoiding outdoor activity -- Engadget

Shocker! Internet use now ties TV in time spent avoiding outdoor activity -- Engadget:

"internet use has also risen to 13 hours weekly, a veritable tie to which we naturally reply, 'what took it so long?' This number represents a 121 percent uptake in the past five years"

Is this a typo? Is it 13 hours a week or 13 hours a day?