Arbitron ranked the most popular minutes for radio commercials. The lowest rated minute during an average commercial break in morning-drive is 94% of the lead-in audience. The high level of audience retention in the morning-drive daypart suggests greater listener engagement in the morning and substantiates the value of morning-drive inventory. The audience for one-minute breaks is nearly the same as the lead-in audience (99.6%), and the lowest rated minute in two-minute breaks is 94.7% of the audience prior to the spot break. The lowest rated minute during three-, four-, five- and six-minute breaks ranges from 87.7% to 89.4% of the lead-in audience, Arbitron says.