An audience indicator used for the daily press; it is based on the previous day's readership, with reference to the number of days the title is published in a week (six days). Process of calculation: -1) Total readers from the previous day: Monday readers + Tuesday readers + ... -2) Average number of readers by publication day: Total readers from the previous day / Number of days the title is published (6) -3) AIR (in %) (Average number of readers by publication day / Total population aged 15 years and older) x 100.