Tom Taylor’s NOW Newsletter says Nielsen had already been using PPM findings for its out-of-home product, to capture viewing in restaurants, bars, retail settings, etc. This year, it was supposed to integrate data from the PPM panels to its local television ratings. But NOW hears that issues have cropped up during the test phase — perhaps related to the Dolby-processed signals used by some TV stations. Presumably none of that would affect Nielsen’s use of PPM for radio ratings. But the problem might push back the TV integration to 2019.