November streaming listening data released by Triton Digital today shows Pandora has crossed the one million Average Active Sessions mark for the first time (1,045,551). Second place Clear Channel continues to grow on the strength of its relaunched iHeartRadio (168,173). CBS Radio, which recently lost AOL Radio’s 200+ channels to Slacker, fell from 126,538 to 97,107 but still ranks third. Cumulus and Slacker, both trending up, round out the top five, according to Inside Radio.