FORTUNE -- The folks at the Chitika ad network set out last month to test whether Microsoft's (MSFT) Surface -- heavily promoted as the tablet best suited for doing real work -- is actually being used more in work settings than Apple's (AAPL) iPad or all those...
Chitika: At the 9 p.m. peak, iPad gets 4X Android tablets’ web use
Today's chart: iPad vs. Android tablets vs. Microsoft Surface, hour by hour
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