Pandora has released its latest ratings metrics for June via Triton Digital. National audience metrics for June 2012 show that among Adults 18-49, Pandora has a weekly cume of 25,333,249, a six percent increase from the March 2012 weekly cume of 23,874,175. The June 2012 Triton Webcast Metrics ratings rank Pandora as the largest adult 18-49 radio network in the U.S. when compared to radio networks in the Arbitron June 2012 RADAR 113 report. For each of the top ten markets, Pandora saw AQH and cume increases in the 18-34, 18-49 and 25-54 adult demos, with the strongest gains coming from the 25-54 demo.

Pandora Chief Revenue Officer John Trimble said, "Third party metrics have once again reflected Pandora's continued growth in every demo, across all markets, both in audience size and time spent listening. These metrics are helping the radio advertising industry make informed buying decisions between terrestrial and internet radio."

Starcom EVP of Local Activation Kevin Gallagher said, "It's no secret that an increasing amount of audio is consumed online. With Triton Webcast Metrics ratings, we will be able to compare, as well as combine, audience delivery within the entire audio ecosystem. It's important to provide advertisers with a holistic view of the entire radio audience to help them understand the internet radio opportunity and value proposition."

The streaming music service released its own listening metrics for June earlier this month, with listener hours for the month of reaching 1.08 billion.