The second-quarter earnings results are out in the open now, so Light Reading Mobile has sliced, diced, and analyzed the big five European operators' numbers to reveal just how well these communication giants are doing in their wireless businesses.

The selection of wireless financial data from the operators' home markets and key European operations gives a snapshot of the mobile landscape across the pond, and Telefónica SA (NYSE: TEF) has emerged as leader of the wireless pack on several metrics. (See Update: Wireless Q2 Score Card.)

The Spanish giant didn't rack up the biggest revenues in the quarter, compared to Deutsche Telekom AG (NYSE: DT) and Vodafone Group plc (NYSE: VOD), nor does it have the most wireless customers (that would be Vodafone), but it showed the best growth rates in terms of revenues, subscriber additions, and average revenue per user (ARPU) compared with the same period a year ago.

For all of the operators, mobile data is a key growth driver in Europe. Some operators reported data revenue figures for the quarter, while others reported in terms of data ARPU.

The chart includes data ARPU figures, which are averaged across the operators' European operations for Orange (NYSE: FTE) and Telefónica. But the overall mobile data revenue numbers for Deutsche Telekom, Telecom Italia Mobile SpA (Milan: TIM), and Vodafone are worthy of mention here.