WPRO is the only news talk station that is live and local 16 hours a day.
If you are going to take it literally, the Ohio station is more than 16 hours a day. You'd have to find another station that is live and local for EXACTLY 16 hours per day to say that WPRO is not the only station.
Anyway, they obviously mean in the Providence market. More like... "WPRO is the only local
news talk station with the most
live and local programming