in advertising, the average number of opportunities the reader, viewer, (listener OTH) has to come across a particular ad e.g. the Sun - 3; the Radio Times -20.
OTS; OPPORTUNITY-TO-SEE
Meaning of OTS; OPPORTUNITY-TO-SEE in English
Raynet Business and Marketing English glossary. Английский глоссарий компании Raynet Business and Marketing . 2012